This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “The Current in a Series RLC Circuit”.

1. In a series RLC circuit, the phase difference between the current in the capacitor and the current in the resistor is?

a) 0^{0}

b) 90^{0}

c) 180^{0}

d) 360^{0}

View Answer

Explanation: In a series RLC circuit, the phase difference between the current in the capacitor and the current in the resistor is 0

^{0}because same current flows in the capacitor as well as the resistor.

2. In a series RLC circuit, the phase difference between the current in the inductor and the current in the resistor is?

a) 0^{0}

b) 90^{0}

c) 180^{0}

d) 360^{0}

View Answer

Explanation: In a series RLC circuit, the phase difference between the current in the inductor and the current in the resistor is 0

^{0}because same current flows in the inductor as well as the resistor.

3. In a series RLC circuit, the phase difference between the current in the capacitor and the current in the inductor is?

a) 0^{0}

b) 90^{0}

c) 180^{0}

d) 360^{0}

View Answer

Explanation: In a series RLC circuit, the phase difference between the current in the inductor and the current in the capacitor is 0

^{0}because same current flows in the inductor as well as the capacitor.

4. In a series RLC circuit, the phase difference between the current in the circuit and the voltage across the resistor is?

a) 0^{0}

b) 90^{0}

c) 180^{0}

d) 360^{0}

View Answer

Explanation: In a series RLC circuit, the phase difference between the voltage across the resistor and the current in the circuit is 0

^{0}because they are in phase.

5. In a series RLC circuit, the phase difference between the current in the circuit and the voltage across the capacitor is?

a) 0^{0}

b) 90^{0}

c) 180^{0}

d) 360^{0}

View Answer

Explanation: In a series RLC circuit, voltage across capacitor lags the current in the circuit by 90

^{0}so, the phase difference between the voltage across the capacitor and the current in the circuit is 90

^{0}.

6. _________ the resonant frequency, the current in the inductor lags the voltage in a series RLC circuit.

a) Above

b) Below

c) Equal to

d) Depends on the circuit

View Answer

Explanation: The current in the inductor lags the voltage in a series RLC circuit if a circuit is inductive dominant i.e. if X

_{L}> X

_{C}

ω

_{L}> 1/ω

_{C}=> ω > 1/√LC => ω > ω

_{0}.

So, the current in the inductor lags the voltage in a series RLC circuit above the resonant frequency.

7. _________ the resonant frequency, the current in the capacitor leads the voltage in a series RLC circuit.

a) Above

b) Below

c) Equal to

d) Depends on the circuit

View Answer

Explanation: The current in the capacitor leads the voltage in a series RLC circuit if circuit is capacitive dominant i.e.i.e. if X

_{L}< X

_{C}

ω

_{L}< 1/ω

_{C}=> ω < 1/√LC => ω < ω

_{0}.

So, the current in the capacitor leads the voltage in a series RLC circuit below the resonant frequency.

**Sanfoundry Global Education & Learning Series – Basic Electrical Engineering.**

To practice all areas of Basic Electrical Engineering, __here is complete set of 1000+ Multiple Choice Questions and Answers__.

**If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]**