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WorksheetsAC Circuits Quiz
Total questions: 10
Worksheet time: 5mins
What is the property of a conductor by which a change in current creates a voltage in both the conductor itself and any nearby conductors?
Conductance
Capacitance
Inductance
Resistance
According to Lenz's law, what does a changing electric current through a circuit with inductance induce?
No voltage change
A proportional voltage that reinforces the change in current
A proportional voltage that opposes the change in current
A constant voltage regardless of the change in current
What is the unit of mutual inductance?
Tesla
Ohm
Farad
Henry
In an RL circuit, what is the characteristic time constant given by?
R/L
L/R
R*C
C/R
What is the phase difference between voltage and current in a circuit with an inductor?
180 degrees
90 degrees
45 degrees
0 degrees
What is the resonant frequency of an RLC series circuit?
LC / 2π
1 / (2π√LC)
2π√LC
1 / (LC)
In an AC circuit with a capacitor, how does the current relate to the voltage?
Current is out of phase by 180 degrees
Current is in phase with voltage
Current lags voltage by 90 degrees
Current leads voltage by 90 degrees
What is the term for the opposition to the change in flow of current in an AC circuit due to inductance and capacitance?
Reactance
Conductance
Impedance
Resistance
What is the power factor in an RLC circuit?
sinϕ
cosϕ
cotϕ
tanϕ
What happens to the impedance at the resonant frequency in an RLC circuit?
It becomes infinite
It becomes zero
It equals the reactance
It equals the resistance
