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 natural frequency of L.C circuit is equal to

Question # 2

The condition of resonance is:

Question # 3

The inductive reactance of a coil is direction proportional to.

Question # 4

Unit of impedance is:

Question # 5

In case of A.C. through resistor V and I are

Question # 6

In A.C circuit of inductor which one is true

Question # 7

In case of capacitor, the unit of reactance is

Question # 8

At resonance, the behavior of R-L-C series circuit is.

Question # 9

The sum of positive and negative peak value called.

Question # 10

The circuit which compares the two voltages is.

Question # 11

Direct current can not flow through.

Question # 12

The flow of D.C current is opposed by

Question # 13

The reactance is the ratio of

Question # 14

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

Question # 15

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 16

The effective value of any sinusoidal alternating current or voltage is

Question # 17

The electromagnetic spectrum contains

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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 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
2 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
3 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=
4 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
5 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
6 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
7 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
8 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
9 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
10 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

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