GIKI Entry Test: Physics MCQs with Answers

Question 1

The current in an AC circuit is given by I = 10 sin(100t). The frequency is

Accepted Answer

50 / π Hz

Answer

100 / (2π) Hz

Answer

50 Hz

Answer

100 Hz

Question 2

A series LCR circuit has R = 10 ohm, L = 0.1 H, and C = 100 μF. If the frequency of the AC source is 50 Hz, what is the impedance?

Accepted Answer

10 ohm

Answer

17.9 ohm

Answer

14.1 ohm

Answer

20 ohm

Question 3

How many significant figures in 100.0?

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Question 4

What are the dimensions of force?

Accepted Answer

MLT⁻²

Answer

ML²T⁻²

Answer

MLT⁻¹

Answer

ML²T⁻¹

Question 5

A series LCR circuit has R = 10 Ω, L = 0.1 H, and C = 100 μF. The resonance frequency is

Accepted Answer

50 / π Hz

Answer

50 Hz

Answer

100 / π Hz

Answer

100 Hz