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

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

Question # 2

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

Question # 3

In A.C circuit of inductor which one is true

Question # 4

In chopke coil the resistance XL an resistance R are:

Question # 5

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

Question # 6

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

Question # 7

The unit of impedance is.

Question # 8

Power dissipation in A.C circuit is expressed as:

Question # 9

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

Question # 10

The combined effect of resistance and reactance is knows as.

Question # 11

SI unit of reactance is.

Question # 12

In frequency modulation, the amplitude of carrier waves is

Question # 13

Radio frequency choke is

Question # 14

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

Question # 15

In case of capacitor, the unit of reactance is

Question # 16

At high frequency, the current through a capacitor is

Question # 17

The phase angle of a series RLC circult at resonant frequency 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 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
2 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
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 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
5 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
6 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
7 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
8 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
9 The highest value reached by the voltage or current in one cycle is called.
A. Peak ot peak value
B. Peak value
C. Instantaneous value
D. Root mean square value
10 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative

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