ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The field around a moving charge is called

Question # 2

The SI unit of magnetic induction is tesla which is equal to

Question # 3

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 4

Current is measured in

Question # 5

CRO deflects the beam of

Question # 6

The gavanometer constant of a moving coil galvanometer is given by

Question # 7

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 8

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 9

A resistance used in galvanometer to make it voltmeter is called

Question # 10

A long wire wound tightly on a cylindrical core is called:

Question # 11

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 12

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 13

The force experienced by charged particle is maximum, if it moves

Question # 14

The pointer of a magnetic compass:

Question # 15

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is
A. 5N
B. 4N
C. 1.5N
D. 6N
2 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
3 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
4 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
5 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
6 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
7 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
8 If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is
A. F = B2
B. F = 0
C. F = B
D. F = B/2
9 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
10

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field

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