The capacitor voltage always leads the current by 90°.
The capacitor voltage always leads the current by 90°.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
In the complex plane, the number 14 - j5 is located in the
In the complex plane, the number 14 - j5 is located in the
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
The resistor voltage is always out of phase with the current.
The resistor voltage is always out of phase with the current.
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
A complex number represents a phasor quantity.
A complex number represents a phasor quantity.
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
What is the angular difference between +j4 and -j4?
What is the angular difference between +j4 and -j4?
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
The complex number 40 ∠ 55° is equivalent to
The complex number 40 ∠ 55° is equivalent to
The polar form of a complex number consists of a real part and a j part.
The polar form of a complex number consists of a real part and a j part.
The complex number 6 + j6 is equivalent to
The complex number 6 + j6 is equivalent to
The resistor voltage is always out of phase with the current.
The resistor voltage is always out of phase with the current.
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
What is the angular difference between +j4 and -j4?
What is the angular difference between +j4 and -j4?
Total current in an RC circuit always leads the source voltage.
Total current in an RC circuit always leads the source voltage.
The circuit phase angle is the angle between the total current and the applied (source) voltage.
The circuit phase angle is the angle between the total current and the applied (source) voltage.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
Apparent power is expressed in watts.
Apparent power is expressed in watts.
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
The impedance of a series RC circuit varies directly with frequency.
The impedance of a series RC circuit varies directly with frequency.
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
A positive angle of 30° is equivalent to a negative angle of
A positive angle of 30° is equivalent to a negative angle of
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
In the complex plane, the number 14 - j5 is located in the
In the complex plane, the number 14 - j5 is located in the
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
Apparent power is expressed in watts.
Apparent power is expressed in watts.
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
An imaginary number is one that exists only in the mind of the mathematician.
An imaginary number is one that exists only in the mind of the mathematician.
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
The circuit phase angle is the angle between the total current and the applied (source) voltage.
The circuit phase angle is the angle between the total current and the applied (source) voltage.
Complex numbers can be added and subtracted but not multiplied or divided.
Complex numbers can be added and subtracted but not multiplied or divided.
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
Total current in an RC circuit always leads the source voltage.
Total current in an RC circuit always leads the source voltage.
Complex numbers can be added and subtracted but not multiplied or divided.
Complex numbers can be added and subtracted but not multiplied or divided.
In a series RC circuit, when the frequency and the resistance are halved, the impedance
In a series RC circuit, when the frequency and the resistance are halved, the impedance
The power factor (PF) indicates how much of the apparent power is true power.
The power factor (PF) indicates how much of the apparent power is true power.
The capacitor voltage always leads the current by 90°.
The capacitor voltage always leads the current by 90°.
In the complex plane, the number 4 + j3 is located in the
In the complex plane, the number 4 + j3 is located in the
The complex number 40 ∠ 55° is equivalent to
The complex number 40 ∠ 55° is equivalent to
In a lag network, the output voltage lags the input voltage in phase.
In a lag network, the output voltage lags the input voltage in phase.
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
A filter passes all frequencies.
A filter passes all frequencies.
In the complex plane, the number 4 + j3 is located in the
In the complex plane, the number 4 + j3 is located in the
Point +4 on the complex plane is
Point +4 on the complex plane is
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
A complex number represents a phasor quantity.
A complex number represents a phasor quantity.
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
Point +4 on the complex plane is
Point +4 on the complex plane is
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
In a series RC circuit, when the frequency and the resistance are halved, the impedance
In a series RC circuit, when the frequency and the resistance are halved, the impedance
An imaginary number is one that exists only in the mind of the mathematician.
An imaginary number is one that exists only in the mind of the mathematician.
The impedance of a series RC circuit varies directly with frequency.
The impedance of a series RC circuit varies directly with frequency.
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
The power factor (PF) indicates how much of the apparent power is true power.
The power factor (PF) indicates how much of the apparent power is true power.
The polar form of a complex number consists of a real part and a j part.
The polar form of a complex number consists of a real part and a j part.
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
A positive angle of 30° is equivalent to a negative angle of
A positive angle of 30° is equivalent to a negative angle of
In a lag network, the output voltage lags the input voltage in phase.
In a lag network, the output voltage lags the input voltage in phase.
A filter passes all frequencies.
A filter passes all frequencies.
The complex number 6 + j6 is equivalent to
The complex number 6 + j6 is equivalent to
