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

A solenoid is a coil of wire which is:

Question # 2

CRO deflects the beam of

Question # 3

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

Question # 4

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 5

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 # 6

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 # 7

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

Question # 8

Ammeter is used to measure

Question # 9

For the conversion of galvanometer into voltmeter, we connect a

Question # 10

Magnetic flux and flux density are related by

Question # 11

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

Question # 12

The torque per unit twist of coil is called

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 18

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 19

A current carrying conductor sets up its own:

Question # 20

Galvanometer is a device used for the detection of

Question # 21

The sources of magnetic field are

Question # 22

The CRO deflects the beam of electrons, when they passes through uniform

Question # 23

Avo-meter is used of measure the

Question # 24

The direction of lines of force depends upon the direction of

Question # 25

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 # 26

NmA-1 is commonly called:

Question # 27

A charged particle moving at right angle to the magnetic field will experience

Question # 28

Tesla is the unit of

Question # 29

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 # 30

The pointer of a magnetic compass:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
2 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
3 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
4 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
5 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
6 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
7 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
8 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
9 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
10 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance

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