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

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

Question # 2

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

Question # 3

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

Question # 4

The magnetic field outside the solenoid due to current is

Question # 5

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 # 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

Magnetic lines of force:

Question # 8

The field around a moving charge is called

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

The torque per unit twist of coil is called

Question # 13

The gavanometer constant of a moving coil galvanometer is given by

Question # 14

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 # 15

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

Question # 16

The SI unit of magnetic permeability is

Question # 17

The strength of magnetic field around the current conductor is

Question # 18

CRO deflects the beam of

Question # 19

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

Question # 20

The vector representation of force experience give the direction of

Question # 21

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

Question # 22

The permeability of free space is measured in:

Question # 23

Ammeter is used to measure

Question # 24

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 25

The magnetic field in the middle of a solenoid due to current is

Question # 26

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

Question # 27

Avo-meter is used of measure the

Question # 28

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

Question # 29

A voltmeter is used to measure the

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
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 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
4 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
5 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
6 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
7 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
8 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
9 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
10 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these

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