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

Galvanometer is a device used for the detection of

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

The unit of magnetic flux is

Question # 4

The gavanometer constant of a moving coil galvanometer is given by

Question # 5

The SI unit of magnetic flux is

Question # 6

magnetic field is a:

Question # 7

The most suitable material for permanent magnet is

Question # 8

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 # 9

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

Question # 10

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

Question # 11

In the region surrounding a current carrying wire:

Question # 12

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

Question # 13

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

Question # 14

A field is uniform and much stronger:

Question # 15

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

Question # 16

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

Question # 17

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 # 18

A galvanometer is an instrument used to

Question # 19

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

Question # 20

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

Question # 21

The SI unit of flux density is

Question # 22

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

Question # 23

The direction of lines of force depends upon the direction of

Question # 24

A resistance used in voltmeter is called

Question # 25

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

Question # 26

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

Question # 27

Resistance is measured in

Question # 28

Centripetal force for electron is given by

Question # 29

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

Question # 30

Current is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
2 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
3 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
4

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
5 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
6 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 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
8 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)
9 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
10 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these

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