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 Basic circuit element in a D.C. circuits which controls the current and voltage is

Question # 2

A resistance frequency the impedance of RLC parallel circuit is.

Question # 3

The main use of A.C is

Question # 4

In metal detector, we use.

Question # 5

The basic circuit element in A.C. circuit which controls current.

Question # 6

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

Question # 7

The natural frequency of L.C circuit is equal to

Question # 8

An in cudutor may store energy in

Question # 9

During each cycle A.C. voltage reaches a peak value.

Question # 10

XL=

Question # 11

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 12

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

Question # 13

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

Question # 14

The unit of impedance is.

Question # 15

Power dissipation in A.C circuit is expressed as:

Question # 16

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

Question # 17

In A.C circuit of inductor which one is true

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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 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
2 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
3 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
4 In A.C circuit of inductor which one is true
A. Voltage leads current by phase angle π/2
B. Voltage lags current by π/2
C. Current leads voltage by π/2
D. Both remain in phase
5 The electromagnetic spectrum contains
A. Radio waves
B. X-rays
C. Microwaves
D. All of these
6 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
7 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
8 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
9 Electron vibrating 94,000 times each second will produce radio waves of frequency.
A. 94 Hz
B. 940 HZ
C. 94 Hz
D. 490 Hz
10 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

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