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

A voltmeter is used to measure the

Question # 2

In the formula B= µ̻ nl, the symbol n denotes:

Question # 3

The sources of magnetic field are

Question # 4

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 # 5

The gavanometer constant of a moving coil galvanometer is given by

Question # 6

The pointer of a magnetic compass:

Question # 7

The permeability of free space is measured in:

Question # 8

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 # 9

The SI unit of magnetic induction is

Question # 10

The angle of deflection of coil can be measured by the

Question # 11

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

Question # 12

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

Question # 13

The vector representation of force experience give the direction of

Question # 14

Method "lamp and scale arrangement" used to measure the

Question # 15

The magnetic field in the middle of a solenoid due to current is

Question # 16

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

Question # 17

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

Question # 18

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 19

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 # 20

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

Question # 21

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

Question # 22

A charged particle moving at right angle to the magnetic field will experience

Question # 23

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 # 24

In the region surrounding a current carrying wire:

Question # 25

The force acting on a charge moving in a magnetic field

Question # 26

The SI unit of magnetic flux is.

Question # 27

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

Question # 28

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

Question # 29

The current is measured in

Question # 30

Magnetic induction is also called as:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
3 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
4 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
5 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
6 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
7 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
8 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)
9 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
10 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber

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