ECAT Pre Engineering Physics Chapter 14 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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

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Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Question # 1

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 # 2

Magnetic induction is also called as:

Question # 3

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 4

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 5

Flurescent screen is a screen where visible spot

Question # 6

The CRO is used for displaying the waveform of a given

Question # 7

The SI unit of magnetic permeability is

Question # 8

The permeability of free space is measured in:

Question # 9

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

Question # 10

The strength of magnetic field around the current conductor is

Question # 11

The vector representation of force experience give the direction of

Question # 12

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

Question # 13

magnetic field is a:

Question # 14

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 15

In the expression of force experienced by electron, the direction of both v and B are

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
2 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
3 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
4 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
5 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
6 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
7 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
8 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
9 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
10 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum

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