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

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

Question # 2

Ammeter is used to measure

Question # 3

Resistance is measured in

Question # 4

Weber is a unit of

Question # 5

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

Question # 6

NmA-1 is commonly called:

Question # 7

The SI unit of magnetic permeability is

Question # 8

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

Question # 9

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

Question # 10

The SI unit of magnetic flux is.

Question # 11

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

Question # 12

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

Question # 13

The unit of flux density is also given by

Question # 14

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

Question # 15

The force acting on a charge moving in a magnetic field

Question # 16

Which one of the following relations is correct?

Question # 17

The SI unit of magnetic flux is

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

Current is measured in

Question # 22

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 23

The SI unit of flux density is

Question # 24

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

Question # 25

The strength of magnetic field around the current conductor is

Question # 26

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

Question # 27

The magnetic field inside a solenoid can be increased by:

Question # 28

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

Question # 29

The direction of lines of force depends upon the direction of

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
2 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
3 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
4 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
5 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
6 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
7 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
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:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
9 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
10 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer

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