2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
Chapter 16 Test

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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 16 Online MCQ's Test"

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The combined effect of resistance and reactance in circuit is called:

Question # 2

The circuit which compares the two voltages is.

Question # 3

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 4

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

Question # 5

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 6

The wave form of alternating voltage is a

Question # 7

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

Question # 8

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Question # 9

In AC system we generate sine wave form because:

Question # 10

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 11

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.

Question # 12

In case of A.C. through resistor V and I are

Question # 13

Vrms =

Question # 14

The device which allows only the flow of D.C. is.

Question # 15

The unit of impedance is.

Question # 16

Direct current can not flow through.

Question # 17

The main use of A.C is

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ICS 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 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
2 If Vrms be the root mean square value of emf then its peak to peak value is given by
3 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
4 In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
5 The inductive reactance of a coil is direction proportional to.
A. Inductance
B. Resistance
C. Frequency of A.C.
D. Both frequency of A.C. and inductance
6 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
7 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=
8 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
9 The value of capacitive reactance is given by
A. Xc = VI
B. xc= 1/wc or xc= wL
C. xc= 1*wc or xc=Lw
D. All of above
10 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2

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