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

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

Question # 2

magnetic field is a:

Question # 3

Galvanometer is a device used for the detection of

Question # 4

Magnetic induction is also called as:

Question # 5

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 # 6

Weber is a unit of

Question # 7

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

Question # 8

The force experienced by charged particle is maximum, if it moves

Question # 9

A field is uniform and much stronger:

Question # 10

The voltage increases linearly with

Question # 11

The CRO is used for displaying the waveform of a given

Question # 12

A solenoid is a coil of wire which is:

Question # 13

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

Question # 14

The SI unit of magnetic induction is tesla which is equal to

Question # 15

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

Question # 16

A resistance used in galvanometer to make it voltmeter is called

Question # 17

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 18

How many number of anodes used in electron gun

Question # 19

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

Question # 20

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

Question # 21

The force acting on a charge moving in a magnetic field

Question # 22

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 23

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

Question # 24

The torque per unit twist of coil is called

Question # 25

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

Question # 26

Flurescent screen is a screen where visible spot

Question # 27

The pointer of a magnetic compass:

Question # 28

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

Question # 29

NmA-1 is commonly called:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
2 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
3 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
4 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
5 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
6 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
7 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
8 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
9 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
10 The current is measured in
A. volts
B. watt
C. ampere
D. ohm

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