ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

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

Question # 2

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

Question # 3

The force acting on a charge moving in a magnetic field

Question # 4

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

Question # 5

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 6

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

Question # 7

When current passes through a solenoid coil, it behaves like a

Question # 8

Resistance is measured in

Question # 9

The strength of magnetic field around the current conductor is

Question # 10

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

Question # 11

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 # 12

Galvanometer is a device used for the detection of

Question # 13

Ammeter is used to measure

Question # 14

The gavanometer constant of a moving coil galvanometer is given by

Question # 15

The current is measured in

Question # 16

The unit of magnetic flux is

Question # 17

CRO deflects the beam of

Question # 18

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

Question # 19

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 # 20

The SI unit of magnetic flux is

Question # 21

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

Question # 22

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 # 23

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 # 24

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 25

In the formula B= µ̻ nl, the symbol n denotes:

Question # 26

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 # 27

Which is modified form of galvanometer

Question # 28

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 29

The magnetic field outside the solenoid due to current is

Question # 30

Amperean path is a:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
3 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
4 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
5 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
6 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
7 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
8 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
9 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
10 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor

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