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

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 2

The force acting on a charge moving in a magnetic field

Question # 3

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

Question # 4

The SI unit of flux density is.

Question # 5

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

Question # 6

The SI unit of magnetic flux is

Question # 7

The field around a moving charge is called

Question # 8

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

Question # 9

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 10

Avo-meter is used of measure the

Question # 11

Which is modified form of galvanometer

Question # 12

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 # 13

Centripetal force for electron is given by

Question # 14

The magnetic field outside the solenoid due to current is

Question # 15

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

Question # 16

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 17

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 18

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

Question # 19

The permeability of free space is measured in:

Question # 20

Magnetic lines of force:

Question # 21

Tesla is the unit of

Question # 22

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

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

Lorentz force is defined as

Question # 25

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

Question # 26

Weber is a unit of

Question # 27

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

Question # 28

A solenoid is a coil of wire which is:

Question # 29

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

Question # 30

Current is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
2 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
3 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
4 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
5 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
6 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
7 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
8 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
9 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
10 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

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