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

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 # 2

The most suitable material for permanent magnet is

Question # 3

A galvanometer is an instrument used to

Question # 4

The torque per unit twist of coil is called

Question # 5

The SI unit of flux density is.

Question # 6

The SI unit of magnetic permeability is

Question # 7

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

Question # 8

A field is uniform and much stronger:

Question # 9

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

Question # 10

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

Question # 11

The force acting on a charge moving in a magnetic field

Question # 12

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

Question # 13

The SI unit of flux density is

Question # 14

Magnetic flux and flux density are related by

Question # 15

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

Question # 16

The current is measured in

Question # 17

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 18

The CRO deflects the beam of electrons, when they passes through uniform

Question # 19

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

Question # 20

NmA-1 is commonly called:

Question # 21

The strength of magnetic field around the current conductor is

Question # 22

The direction of lines of force depends upon the direction of

Question # 23

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

Question # 24

In the expression of force experienced by electron, the direction of both v and B are

Question # 25

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

Question # 26

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 # 27

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 28

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

Question # 29

In a moving coil galvanometer, the deflecting couple depends upon

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
2 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
3 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
4 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
5 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)
6 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
7 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
8 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
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 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density

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