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

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

Question # 2

The device which allows only the continuous flow of AC through it is.

Question # 3

High frequency radio wave is called as

Question # 4

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

Question # 5

Vrms =

Question # 6

At high frequency, the current through a capacitor is

Question # 7

XL=

Question # 8

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

Question # 9

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

Question # 10

Direct current can not flow through.

Question # 11

The reactance is the ratio of

Question # 12

The power factor of RL series circuit is.

Question # 13

The peak value of A.C source is 20 A, then its rms value will be.

Question # 14

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

Question # 15

The unit of impedance is

Question # 16

The value of capacitive reactance is given by

Question # 17

At resonance frequency, the impedance of RLC series circuit 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 The peak value of A.C source is 20 A, then its rms value will be.
A. 14.1 A
B. 10 A
C. 20 A
D. 28.2 A
2 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
3 Main reason for world wide use of A.C. is
A. It is cheaper
B. Transmitted
C. Botha a and b
D. Reaches in short time
4 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
5 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
6 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
7 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
8 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
9 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
10 If Io is the peak value of current, then its root mean square value is given by
B. 2 Io
C. Io
D. 0.7 Io

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