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

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

Question # 2

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

Question # 3

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 4

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 # 5

The field around a moving charge is called

Question # 6

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

Question # 7

A voltmeter is used to measure the

Question # 8

magnetic field is a:

Question # 9

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 # 10

The torque per unit twist of coil is called

Question # 11

A field is uniform and much stronger:

Question # 12

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

Question # 13

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 # 14

A galvanometer is an instrument used to

Question # 15

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

Question # 16

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 # 17

The SI unit of magnetic flux is

Question # 18

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

Question # 19

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

Question # 20

The unit of magnetic flux is

Question # 21

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 # 22

The voltage increases linearly with

Question # 23

if the field is directed along the normal to the area, then flux is:

Question # 24

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

Question # 25

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

Question # 26

Electron gun consist of

Question # 27

Magnetic flux and flux density are related by

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
2 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
3 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
4 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
5 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
6 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
7 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
8 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
9 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
10 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A

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