Second Year Physics Chapter 16 Online MCQ Test for 2nd Year Physics Chapter 16 Alternating Current Preparation

FSC Part 2 Physics
Chapter 16 Test

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Physics FSC Part 2 Chapter 16 Online MCQ's Test

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Question # 1

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 2

At high frequency, the current through a capacitor is

Question # 3

The unit of impedance is

Question # 4

At resonance, the behavior of R-L-C series circuit is.

Question # 5

The unit of impedance is.

Question # 6

In case of capacitor, the unit of reactance is

Question # 7

Choke consumes extremely small

Question # 8

At high frequency the value of reactance of capacitor will be.

Question # 9

The value of capacitive reactance is given by

Question # 10

The expression P = VI hold only when current and voltage are.

Question # 11

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 12

An A.C. voltmeter reads 220 V, its peak value will be

Question # 13

In pure capacitor A.C. circuit, the current I and charge q are.

Question # 14

The circuit which compares the two voltages is.

Question # 15

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 16

The highest value reached by the voltage or current in one cycle is called.

Question # 17

The slope of q-t curve at any instant of time gives.

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FSC Part 2 Physics Chapter 16 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
2 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
3 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
4 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
5 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
6 In a pure inductive A.C. circuit the current.
A. Lags behind voltage by 90 o
B. Leads the voltage by 90 o
C. In phase with voltage
D. Leads the voltage by 270 o
7 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
8 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
9 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52
10 The device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator

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