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

Method "lamp and scale arrangement" used to measure the

Question # 2

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

Question # 3

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

Question # 4

The SI unit of magnetic flux is.

Question # 5

To convert galvanometer into ammeter we connect

Question # 6

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

Question # 7

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 # 8

Amperean path is a:

Question # 9

Avo-meter is used of measure the

Question # 10

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

Question # 11

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 12

Electron gun consist of

Question # 13

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

Question # 14

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

Question # 15

The direction of lines of force depends upon the direction of

Question # 16

The unit of magnetic flux is

Question # 17

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

Question # 18

The torque per unit twist of coil is called

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

A resistance used in galvanometer to make it voltmeter is called

Question # 23

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

Question # 24

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 25

The pointer of a magnetic compass:

Question # 26

A current carrying conductor sets up its own:

Question # 27

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 28

The SI unit of flux density is.

Question # 29

Which is modified form of galvanometer

Question # 30

magnetic field is a:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
2 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
3 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
4 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
5 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)
6 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
7 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
8 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
9 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
10 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque

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