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 SI unit of magnetic flux is.

Question # 2

Lorentz force is defined as

Question # 3

The angle of deflection of coil can be measured by the

Question # 4

The current sensitivity of the galvanometer is

Question # 5

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 6

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 # 7

Magnetic induction is also called as:

Question # 8

In a moving coil galvanometer, the deflecting couple depends upon

Question # 9

Magnetic flux and flux density are related by

Question # 10

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 11

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 12

The pointer of a magnetic compass:

Question # 13

F = I(L x B) is a

Question # 14

Centripetal force for electron is given by

Question # 15

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

Question # 16

The force acting on a charge moving in a magnetic field

Question # 17

Current is measured in

Question # 18

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 19

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

Question # 20

The torque per unit twist of coil is called

Question # 21

For the conversion of galvanometer into voltmeter, we connect a

Question # 22

A resistance used in galvanometer to make it voltmeter is called

Question # 23

A field is uniform and much stronger:

Question # 24

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

Question # 25

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

Question # 26

A current carrying conductor sets up its own:

Question # 27

A resistance used in voltmeter is called

Question # 28

A voltmeter is used to measure the

Question # 29

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

Question # 30

Strength of magnetic field is measured in SI units, in:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
3 '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
4 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
5

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
6 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
7 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
8 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
9 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
10 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above

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