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

00:00
Question # 1

A resistance used in voltmeter is called

Question # 2

F = I(L x B) is a

Question # 3

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 # 4

CRO deflects the beam of

Question # 5

The strength of magnetic field around the current conductor is

Question # 6

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

Question # 7

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

Question # 8

To convert galvanometer into ammeter we connect

Question # 9

The most suitable material for permanent magnet is

Question # 10

For the conversion of galvanometer into voltmeter, we connect a

Question # 11

Galvanometer is a device used for the detection of

Question # 12

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 13

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

Question # 14

Which one of the following relations is correct?

Question # 15

The current sensitivity of the galvanometer is

Question # 16

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 # 17

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

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 23

Weber is a unit of

Question # 24

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 25

A solenoid is a coil of wire which is:

Question # 26

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 27

Tesla is the unit of

Question # 28

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

Question # 29

The SI unit of flux density is.

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
2 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
3 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
4 A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is
A. 5N
B. 4N
C. 1.5N
D. 6N
5 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
6 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
7 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
8 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
9 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
10 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above

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