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 unit of magnetic flux is

Question # 2

The sources of magnetic field are

Question # 3

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 # 4

The voltage increases linearly with

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Ammeter is used to measure

Question # 9

The SI unit of magnetic flux is.

Question # 10

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

Question # 11

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

Question # 12

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 # 13

F = I(L x B) is a

Question # 14

Tesla is the unit of

Question # 15

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

Question # 16

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

Question # 17

The SI unit of flux density is.

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

Galvanometer is a device used for the detection of

Question # 23

A galvanometer is an instrument used to

Question # 24

The angle of deflection of coil can be measured by the

Question # 25

The magnetic field outside the solenoid due to current is

Question # 26

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 # 27

Avo-meter is used of measure the

Question # 28

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 29

Resistance is measured in

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
2 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
3 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
4 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
5 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
7 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
8 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
9 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
10 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

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