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

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

Question # 2

Flurescent screen is a screen where visible spot

Question # 3

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

Question # 4

The force experienced by charged particle is maximum, if it moves

Question # 5

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:

Question # 6

The SI unit of magnetic induction is

Question # 7

Weber is a unit of

Question # 8

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 9

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

Question # 10

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

Question # 11

How many number of anodes used in electron gun

Question # 12

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

Question # 13

The voltage increases linearly with

Question # 14

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

Question # 15

The SI unit of flux density is.

Question # 16

The current is measured in

Question # 17

Amperean path is a:

Question # 18

The SI unit of magnetic flux is.

Question # 19

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

Question # 20

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:

Question # 21

Centripetal force for electron is given by

Question # 22

F = I(L x B) is a

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

CRO deflects the beam of

Question # 29

Resistance is measured in

Question # 30

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
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
A. 5N
B. 4N
C. 1.5N
D. 6N
3 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
4 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
5 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
6 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
7 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
8 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
9 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
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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