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 force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 2

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

Question # 3

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 4

The sources of magnetic field are

Question # 5

The permeability of free space is measured in:

Question # 6

For the conversion of galvanometer into voltmeter, we connect a

Question # 7

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 8

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 # 9

A field is uniform and much stronger:

Question # 10

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 11

The force acting on a charge moving in a magnetic field

Question # 12

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 # 13

Lorentz force is defined as

Question # 14

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

Question # 15

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
2 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
3 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
4 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
5 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
6 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
7 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
8 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
9 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
10 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B

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