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 direction of lines of force depends upon the direction of

Question # 2

A galvanometer is an instrument used to

Question # 3

The torque per unit twist of coil is called

Question # 4

A current carrying conductor sets up its own:

Question # 5

Weber is a unit of

Question # 6

To convert galvanometer into ammeter we connect

Question # 7

The SI unit of magnetic permeability is

Question # 8

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

Question # 9

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

Question # 10

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 11

Current is measured in

Question # 12

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 13

Magnetic lines of force:

Question # 14

For the conversion of galvanometer into voltmeter, we connect a

Question # 15

The angle of deflection of coil can be measured by the

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 20

Magnetic induction is also called as:

Question # 21

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

Question # 22

Resistance is measured in

Question # 23

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 # 24

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

Question # 25

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 # 26

In the region surrounding a current carrying wire:

Question # 27

The vector representation of force experience give the direction of

Question # 28

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

Question # 29

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 # 30

The field around a moving charge is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
3 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
4 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
5 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
6 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
7 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
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 force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
10 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

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