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

Magnetic flux and flux density are related by

Question # 2

The permeability of free space is measured in:

Question # 3

The magnetic field outside the solenoid due to current is

Question # 4

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

Question # 5

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

Question # 6

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 7

A field is uniform and much stronger:

Question # 8

Strength of magnetic field is measured in SI units, in:

Question # 9

Weber is a unit of

Question # 10

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 11

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 12

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

Question # 13

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 14

To convert galvanometer into ammeter we connect

Question # 15

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 16

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 17

The SI unit of flux density is.

Question # 18

The sources of magnetic field are

Question # 19

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

Question # 20

The vector representation of force experience give the direction of

Question # 21

The SI unit of flux density is

Question # 22

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

Question # 23

The torque per unit twist of coil is called

Question # 24

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

Question # 25

Galvanometer is a device used for the detection of

Question # 26

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 27

The CRO is used for displaying the waveform of a given

Question # 28

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

Question # 29

magnetic field is a:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
2 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
3 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
4 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
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 e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
7 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
8 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
9 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
10 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque

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