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

Question # 3

magnetic field is a:

Question # 4

In the region surrounding a current carrying wire:

Question # 5

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

Question # 6

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 # 7

The SI unit of magnetic flux is

Question # 8

A resistance used in voltmeter is called

Question # 9

The magnetic field outside the solenoid due to current is

Question # 10

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

Question # 11

The magnetic field inside a solenoid can be increased by:

Question # 12

Which is modified form of galvanometer

Question # 13

The voltage increases linearly with

Question # 14

The most suitable material for permanent magnet is

Question # 15

The gavanometer constant of a moving coil galvanometer is given by

Question # 16

The SI unit of magnetic induction is

Question # 17

A beam of electrons is provided by an

Question # 18

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 # 19

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

Question # 20

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 21

Centripetal force for electron is given by

Question # 22

Which one of the following relations is correct?

Question # 23

A resistance used in galvanometer to make it voltmeter is called

Question # 24

The torque per unit twist of coil is called

Question # 25

CRO deflects the beam of

Question # 26

A galvanometer is an instrument used to

Question # 27

NmA-1 is commonly called:

Question # 28

Current is measured in

Question # 29

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

Question # 30

Avo-meter is used of measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
2 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
3 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
4 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
5 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
6 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
7 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
8 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
9 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
10 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current

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