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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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

Main reason for world wide use of A.C. is

Question # 2

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

Question # 3

The power factor of RL series circuit is.

Question # 4

In A.C circuit through a capacitor which one is:

Question # 5

Power dissipated in a pure inductor is.

Question # 6

The peak to peak value of alternating voltage is

Question # 7

Which consumes small power.

Question # 8

For electromagnetic waves, Maxwell generalized

Question # 9

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 10

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?

Question # 11

In Series resonance circuit the impedance of circuit art resonance frequency, is

Question # 12

In Pakistan the frequency of A.C. supply is.

Question # 13

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 14

The unit of impedance is.

Question # 15

The phase difference between the current and voltage at resonce is:

Question # 16

The unit of impedance is

Question # 17

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

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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 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
2 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
3 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
4 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
5 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
6 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
7 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
8 An electromagnetic wave goes from air to glass which of the following does not change?
A. Radio waves
B. X-rays
C. Ultra violet radiation
D. Ultra sond waves
9 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
10 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

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