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 induction is

Question # 2

Resistance is measured in

Question # 3

The CRO is used for displaying the waveform of a given

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

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 6

The SI unit of flux density is

Question # 7

The pointer of a magnetic compass:

Question # 8

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 # 9

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

Question # 10

The unit of flux density is also given by

Question # 11

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

Question # 12

The field around a moving charge is called

Question # 13

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

Question # 14

The most suitable material for permanent magnet is

Question # 15

In the formula B= µ̻ nl, the symbol n denotes:

Question # 16

The unit of magnetic flux is

Question # 17

The SI unit of magnetic flux is.

Question # 18

A solenoid is a coil of wire which is:

Question # 19

Galvanometer is a device used for the detection of

Question # 20

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

Question # 21

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

Question # 22

Current is measured in

Question # 23

Lorentz force is defined as

Question # 24

To convert galvanometer into ammeter we connect

Question # 25

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

Question # 26

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

Question # 27

Amperean path is a:

Question # 28

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 29

NmA-1 is commonly called:

Question # 30

Magnetic lines of force:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
4 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
5 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
6 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
7 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
8

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
9 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
10 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance

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