# Parallel AC Circuit MCQ [Free PDF] – Objective Question Answer for Parallel AC Circuit Quiz

1. In a parallel circuit, we consider _____________ instead of impedance.

A. Resistance
B. Capacitance
C. Inductance

In a parallel circuit, we consider admittance instead of impedance, where admittance is the reciprocal of impedance.

A. Resistance
B. Capacitance
C. Inductance
D. Impedance

In a parallel circuit, we consider admittance instead of impedance, where admittance is the reciprocal of impedance.

3. Which, among the following is the correct expression for impedance?

A. Z = Y
B. Z = 1/Y
C. Z = Y2
D. Z = 1/Y2

We know that impedance is the reciprocal of admittance, hence the correct expression for impedance is

Z = 1/Y.

4. Which, among the following is the correct expression for admittance?

A. Y = Z
B. Y = 1/Z
C. Y = Z2
D. Y = 1/Z2

We know that admittance is the reciprocal of impedance, hence the correct expression for admittance is

Y = 1/Z.

5. What is the unit of admittance?

A. ohm
B. henry
D. ohm-1

The unit for admittance is ohm-1 because the unit of impedance is ohm and admittance is the reciprocal of impedance.

6. As the impedance increases, the admittance ____________

A. Increases
B. Decreases
C. Remains the same
D. Becomes zero

As the impedance increases, the admittance decreases because admittance is equal to 1/impedance.

7. if the impedance of a system is 4 ohm, calculate its admittance.

A. 0.25 ohm-1
B. 4 ohm-1
C. 25 ohm-1
D. 0.4 ohm-1

We know that: Y = 1/Z.
Substituting the value of Z from the question, we get Y = 1/4 = 0.25 = > Y = 0.25 ohm-1.

8. The admittance of a system is 10 ohm-1, calculate its impedance.

A. 10 ohm
B. 0.1 ohm
C. 1 ohm
D. 1.1 ohm

We know that: Z = 1/Y.

Z = 1/10 = 0.1

= > Z = 0.1 ohm.

9. In A parallel circuit, with any number of impedances, The voltage across each impedance is?

A. equal
B. divided equally
C. divided proportionally
D. zero

In parallel circuits, the current across the circuits varies whereas the voltage remains the same. So, the voltage across each impedance is equal in the parallel circuit.

10. In a parallel circuit, current in each impedance is_____________

A. equal
B. different
C. zero
D. infinite