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

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 2

The strength of magnetic field around the current conductor is

Question # 3

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 # 4

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

Question # 5

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

Question # 6

The magnetic field inside a solenoid can be increased by:

Question # 7

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

Question # 8

magnetic field is a:

Question # 9

Current is measured in

Question # 10

To convert galvanometer into ammeter we connect

Question # 11

Magnetic flux and flux density are related by

Question # 12

A galvanometer is an instrument used to

Question # 13

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 # 14

The torque per unit twist of coil is called

Question # 15

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 # 16

The SI unit of magnetic permeability is

Question # 17

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

Question # 18

A resistance used in galvanometer to make it voltmeter is called

Question # 19

The field around a moving charge is called

Question # 20

The permeability of free space is measured in:

Question # 21

In the formula B= µ̻ nl, the symbol n denotes:

Question # 22

The SI unit of magnetic induction is

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

A field is uniform and much stronger:

Question # 28

Electron gun consist of

Question # 29

It is customary represent a current flowing towards the reader by a symbol

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
2 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
3 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
4 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
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
A. 90°
B. 75°
C. 0°
D. 180°
6

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
7 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
8 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
9 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
10 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

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