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 most suitable material for permanent magnet is

Question # 2

NmA-1 is commonly called:

Question # 3

The SI unit of magnetic permeability is

Question # 4

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

Question # 5

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

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

Current is measured in

Question # 9

The permeability of free space is measured in:

Question # 10

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

Question # 11

The strength of magnetic field around the current conductor is

Question # 12

Galvanometer is a device used for the detection of

Question # 13

The sources of magnetic field are

Question # 14

In the region surrounding a current carrying wire:

Question # 15

The current sensitivity of the galvanometer is

Question # 16

The SI unit of flux density is.

Question # 17

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

Question # 18

The force acting on a charge moving in a magnetic field

Question # 19

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

Question # 20

For the conversion of galvanometer into voltmeter, we connect a

Question # 21

How many number of anodes used in electron gun

Question # 22

The magnetic field outside the solenoid due to current is

Question # 23

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 24

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

Question # 25

magnetic field is a:

Question # 26

Centripetal force for electron is given by

Question # 27

CRO deflects the beam of

Question # 28

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

Question # 29

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 # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
3 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
4 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
5 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
6 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
7 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
8 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
9 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
10 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

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