Second Year Physics Chapter 16 Online MCQ Test for 2nd Year Physics Chapter 16 Alternating Current Preparation

FSC Part 2 Physics
Chapter 16 Test

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Physics FSC Part 2 Chapter 16 Online MCQ's Test

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Question # 1

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

Question # 2

The electromagnetic spectrum contains

Question # 3

In pure capacitor A.C. circuit, the current I and charge q are.

Question # 4

The inductive reactance of a coil is direction proportional to.

Question # 5

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Question # 6

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

Question # 7

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

Question # 8

In metal detector, we use.

Question # 9

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.

Question # 10

The flow of D.C current is opposed by

Question # 11

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

Question # 12

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 13

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 # 14

An in cudutor may store energy in

Question # 15

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

Question # 16

The internal resistance of a capacitor is called:

Question # 17

At high frequency, the current through a capacitor is

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FSC 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 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
2 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
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 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
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 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
7 Radio frequency choke is
A. Iron cored
B. Air Cored
C. Air as well as iron cored
D. None of these
8 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
9 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
10 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b

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