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

Current is measured in

Question # 2

The magnetic field in the middle of a solenoid due to current is

Question # 3

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 4

The current sensitivity of the galvanometer is

Question # 5

F = I(L x B) is a

Question # 6

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 7

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

Question # 8

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 9

A voltmeter is used to measure the

Question # 10

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 11

Method "lamp and scale arrangement" used to measure the

Question # 12

Amperean path is a:

Question # 13

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 14

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 15

A resistance used in voltmeter is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
2 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
3 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
4 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
5 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
6 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
7 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
8 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
9 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
10 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above

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