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

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 3

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

Question # 4

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 # 5

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

Question # 6

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

Question # 7

The CRO is used for displaying the waveform of a given

Question # 8

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

Question # 9

The magnetic field outside the solenoid due to current is

Question # 10

Resistance is measured in

Question # 11

The SI unit of magnetic flux is

Question # 12

It is customary represent a current flowing towards the reader by a symbol

Question # 13

The force acting on a charge moving in a magnetic field

Question # 14

Centripetal force for electron is given by

Question # 15

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

Question # 16

The angle of deflection of coil can be measured by the

Question # 17

Current is measured in

Question # 18

The SI unit of magnetic permeability is

Question # 19

CRO deflects the beam of

Question # 20

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 21

The permeability of free space is measured in:

Question # 22

A current carrying conductor sets up its own:

Question # 23

The gavanometer constant of a moving coil galvanometer is given by

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

The strength of magnetic field around the current conductor is

Question # 28

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

Question # 29

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

Question # 30

The SI unit of flux density is.

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
2 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)
3 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
4 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
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 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
7 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)
8 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
9 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
10 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field

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