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

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Question # 1

The value of capacitive reactance is given by

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

At resonance frequency, the impedance of RLC series circuit is.

Question # 7

If Io is the peak value of current, then its root mean square value is given by

Question # 8

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

Question # 9

The unit of impedance is

Question # 10

A capacitor is perfectly insulator for:

Question # 11

The internal resistance of a capacitor is called:

Question # 12

Power dissipation in A.C circuit is expressed as:

Question # 13

The sum of positive and negative peak value called.

Question # 14

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 15

In modulation, low frequency signal is known as

Question # 16

The most common source of an A.C. Voltage is.

Question # 17

In case of capacitor, the unit of reactance 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 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz
2 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
3 When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
A. 100 Ohm
B. 10 Ohm
C. 1000 Ohm
D. 1 Ohm
4 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
5 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
6 In Series resonance circuit the impedance of circuit art resonance frequency, is
A. Maximum
B. Minimum
C. It is unequal to R
D. None of above
7 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
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 condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
10 An alternating quantity (voltage or current) is completely known if we know its:
A. Maximum
B. Frequency and phase
C. Effective value
D. Both (a) & (b)

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