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

Question # 2

The SI unit of magnetic flux is.

Question # 3

For the conversion of galvanometer into voltmeter, we connect a

Question # 4

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

Question # 5

Ammeter is used to measure

Question # 6

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 7

The most suitable material for permanent magnet is

Question # 8

The magnetic field inside a solenoid can be increased by:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

The pointer of a magnetic compass:

Question # 14

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

Question # 15

Which is modified form of galvanometer

Question # 16

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

Question # 17

The SI unit of magnetic induction is

Question # 18

The force acting on a charge moving in a magnetic field

Question # 19

In the expression of force experienced by electron, the direction of both v and B are

Question # 20

The unit of magnetic flux is

Question # 21

Centripetal force for electron is given by

Question # 22

Avo-meter is used of measure the

Question # 23

NmA-1 is commonly called:

Question # 24

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 25

A beam of electrons is provided by an

Question # 26

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

Question # 27

The unit of flux density is also given by

Question # 28

Lorentz force is defined as

Question # 29

The magnetic field outside the solenoid due to current is

Question # 30

The vector representation of force experience give the direction of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
3 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
4 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
5 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
6 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
7 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
8 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
9 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
10 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°

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