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

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

Question # 2

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

Question # 3

In the region surrounding a current carrying wire:

Question # 4

A resistance used in galvanometer to make it voltmeter is called

Question # 5

Avo-meter is used of measure the

Question # 6

The SI unit of flux density is.

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

The most suitable material for permanent magnet is

Question # 9

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 10

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

Question # 11

Magnetic lines of force:

Question # 12

A charged particle moving at right angle to the magnetic field will experience

Question # 13

Current is measured in

Question # 14

The unit of magnetic flux is

Question # 15

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

Question # 16

Magnetic induction is also called as:

Question # 17

Method "lamp and scale arrangement" used to measure the

Question # 18

For the conversion of galvanometer into voltmeter, we connect a

Question # 19

Tesla is the unit of

Question # 20

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

Question # 21

A resistance used in voltmeter is called

Question # 22

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

Question # 23

Weber is a unit of

Question # 24

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 25

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

Question # 26

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

Question # 27

The sources of magnetic field are

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
2 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
3 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
4 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
5 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
6 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
7 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
8 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
9 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
10 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these

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