A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode?
A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode?
Which one of the following statements is true for the voltages in a series RL circuit?
Which one of the following statements is true for the voltages in a series RL circuit?
The Norton current is sometimes called the
The Norton current is sometimes called the
The direction of electron current flow is:
The direction of electron current flow is:
Current can flow through a normally open push button switch as long as:
Current can flow through a normally open push button switch as long as:
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?
The rms value of a sine waveform is:
The rms value of a sine waveform is:
A basic capacitor is composed of:
A basic capacitor is composed of:
Which one of the following statements is true for the currents in a parallel RC circuit?
Which one of the following statements is true for the currents in a parallel RC circuit?
The north pole of a magnet is the one:
The north pole of a magnet is the one:
A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?
A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?
How many types of flow are there in a semiconductor?
How many types of flow are there in a semiconductor?
Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode
Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode
A dielectric material is:
A dielectric material is:
The total impedance of a series RLC circuit:
The total impedance of a series RLC circuit:
The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio?
The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio?
What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?
What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?
Which one of the following principles best describes the basic operation of an electromagnet?
Which one of the following principles best describes the basic operation of an electromagnet?
If a load resistance is 1 kW, a stiff current source has a resistance of
If a load resistance is 1 kW, a stiff current source has a resistance of
Doubling the diameter of the coil in an inductor:
Doubling the diameter of the coil in an inductor:
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?
Which one of the following devices is most often used for measuring electrical potential difference?
Which one of the following devices is most often used for measuring electrical potential difference?
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?
A battery is a device composed of one or more:
A battery is a device composed of one or more:
Which one of the following phrases most accurately describes a purely inductive circuit?
Which one of the following phrases most accurately describes a purely inductive circuit?
Doubling the operating voltage of a purely capacitive circuit:
Doubling the operating voltage of a purely capacitive circuit:
The equivalent of 1 megohms is:
The equivalent of 1 megohms is:
When the graph of current versus voltage is a straight line, the device is referred to as
When the graph of current versus voltage is a straight line, the device is referred to as
A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding?
A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding?
The rise time of a pulse waveform is the time required for the voltage to rise:
The rise time of a pulse waveform is the time required for the voltage to rise:
When the collector current increases, what does the current gain do?
When the collector current increases, what does the current gain do?
Which one of the following statements is true for the voltages in a series RC circuit?
Which one of the following statements is true for the voltages in a series RC circuit?
Which one of the following phrases best describes residual magnetism?
Which one of the following phrases best describes residual magnetism?
What is the smallest number of polarities required for current flow?
What is the smallest number of polarities required for current flow?
Which one of the following statements best applies to a parallel RLC circuit?
Which one of the following statements best applies to a parallel RLC circuit?
Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?
Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?
For a pure capacitor:
For a pure capacitor:
What is a negative ion?
What is a negative ion?
The core of an electromagnet is said to be in saturation when:
The core of an electromagnet is said to be in saturation when:
The nucleus of the copper atom contains how many protons?
The nucleus of the copper atom contains how many protons?
If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point
If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point
A device that converts mechanical into electrical energy is?
A device that converts mechanical into electrical energy is?
The total impedance of a parallel RLC circuit:
The total impedance of a parallel RLC circuit:
For normal operation of the transistor, the collector diode has to be
For normal operation of the transistor, the collector diode has to be
The rotating coil of wire in an electric motor is called the:
The rotating coil of wire in an electric motor is called the:
Doubling the number of turns of wire in an inductor:
Doubling the number of turns of wire in an inductor:
Which one of the following statements is true for the impedance of a series RC circuit?
Which one of the following statements is true for the impedance of a series RC circuit?
What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?
What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?
What form of energy is used for creating static electricity?
What form of energy is used for creating static electricity?
Which one of the following statements is true for voltage in a series circuit?
Which one of the following statements is true for voltage in a series circuit?
What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding?
What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding?
The basic unit of measurement for current is the:
The basic unit of measurement for current is the:
The number of free electrons and holes in intrinsic semiconductor increases when the temperature
The number of free electrons and holes in intrinsic semiconductor increases when the temperature
Which one of the following kinds of materials has the lowest permeability?
Which one of the following kinds of materials has the lowest permeability?
The value of a capacitor can be made larger by:
The value of a capacitor can be made larger by:
At room temperature a conductor has low many holes?
At room temperature a conductor has low many holes?
As the temperature increases, the current gain
As the temperature increases, the current gain
When the Q point moves along the load line, the voltage increases when the current
When the Q point moves along the load line, the voltage increases when the current
The total inductance of a series inductor circuit is:
The total inductance of a series inductor circuit is:
Silicon atoms combine into an orderly pattern called a
Silicon atoms combine into an orderly pattern called a
How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?
How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?
Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91?
Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91?
The equivalent of 1 micro A is:
The equivalent of 1 micro A is:
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?
If the current gain is 200 and the collector current is 100 mA, the base current is
If the current gain is 200 and the collector current is 100 mA, the base current is
Which one of the following statements is true for current flowing in a parallel circuit?
Which one of the following statements is true for current flowing in a parallel circuit?
A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?
A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?
A device that converts mechanical pressure to electrical energy is called a:
A device that converts mechanical pressure to electrical energy is called a:
When a parallel RLC circuit is operating at its resonant frequency:
When a parallel RLC circuit is operating at its resonant frequency:
Holes are the minority carriers in which type of semiconductor?
Holes are the minority carriers in which type of semiconductor?
Which one of the following is a statement of KirchhofFs voltage law?
Which one of the following is a statement of KirchhofFs voltage law?
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?
The graph of current gain versus collector current indicates that the current gain
The graph of current gain versus collector current indicates that the current gain
Which one of the following statements most accurately applies to the frequency of a waveform?
Which one of the following statements most accurately applies to the frequency of a waveform?
In an intrinsic semiconductor, the number of free electrons
In an intrinsic semiconductor, the number of free electrons
The value of a capacitor can be made larger by:
The value of a capacitor can be made larger by:
Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?
Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?
Waveforms are graphs that show:
Waveforms are graphs that show:
A high-pass filter:
A high-pass filter:
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:
Current and voltage are said to be in phase when:
Current and voltage are said to be in phase when:
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point
One henry of inductance is defined as:
One henry of inductance is defined as:
Which one of the following statements is true for current flowing in a series circuit?
Which one of the following statements is true for current flowing in a series circuit?
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?
Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance?
Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance?
In a step-down transformer, which is larger?
In a step-down transformer, which is larger?
The merging of a free electron and a hole is called
The merging of a free electron and a hole is called
Which one of the following statements best describes magnetic hysteresis?
Which one of the following statements best describes magnetic hysteresis?
In a pure inductor:
In a pure inductor:
Which one of the following is a direct statement of Ohm's law?
Which one of the following is a direct statement of Ohm's law?
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?
Most AC power is obtained from:
Most AC power is obtained from:
What is the barrier potential of a silicon diode at room temperature?
What is the barrier potential of a silicon diode at room temperature?
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?
Which one of the following statements is true for the currents in a parallel RL circuit?
Which one of the following statements is true for the currents in a parallel RL circuit?
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?
A farad is defined as the amount of capacitance necessary for:
A farad is defined as the amount of capacitance necessary for:
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?
A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?
A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?
What is the turns ratio for the transformer specified in the above question?
What is the turns ratio for the transformer specified in the above question?
The Thevenin resistance is equal in value to the
The Thevenin resistance is equal in value to the
Which one of the following statements is true for the voltage in a parallel RC circuit?
Which one of the following statements is true for the voltage in a parallel RC circuit?
What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm
What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm
The knee voltage of a diode is approximately equal to the
The knee voltage of a diode is approximately equal to the
What form of energy is used to maintain an imbalance of charges between the terminals of a battery?
What form of energy is used to maintain an imbalance of charges between the terminals of a battery?
