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 vector representation of force experience give the direction of

Question # 2

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

Question # 3

A voltmeter is used to measure the

Question # 4

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 # 5

Magnetic flux and flux density are related by

Question # 6

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

Question # 7

A long wire wound tightly on a cylindrical core is called:

Question # 8

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 # 9

How many number of anodes used in electron gun

Question # 10

F = I(L x B) is a

Question # 11

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 # 12

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

Question # 13

Current is measured in

Question # 14

The angle of deflection of coil can be measured by the

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

Tesla is the unit of

Question # 17

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

Question # 18

Resistance is measured in

Question # 19

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

Question # 20

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 21

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 22

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

Question # 23

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

Question # 24

A field is uniform and much stronger:

Question # 25

The field around a moving charge is called

Question # 26

The current is measured in

Question # 27

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

Question # 28

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

Question # 29

Avo-meter is used of measure the

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
2 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
3 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
4 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
5 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
6 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
7 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
8 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
9 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
10 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these

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