ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The SI unit of flux density is

Question # 2

The field around a moving charge is called

Question # 3

A solenoid is a coil of wire which is:

Question # 4

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

Question # 5

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 6

A galvanometer is an instrument used to

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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 # 12

The SI unit of magnetic flux is

Question # 13

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 14

To convert galvanometer into ammeter we connect

Question # 15

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
2 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
3 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
4 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
5 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
6 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
7 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
8 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
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 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B

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