ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The unit of magnetic flux is

Question # 2

It is customary represent a current flowing towards the reader by a symbol

Question # 3

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 4

The torque per unit twist of coil is called

Question # 5

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

Question # 6

Method "lamp and scale arrangement" used to measure the

Question # 7

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

Question # 8

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

Question # 9

The sources of magnetic field are

Question # 10

The force acting on a charge moving in a magnetic field

Question # 11

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

Question # 12

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 # 13

The vector representation of force experience give the direction of

Question # 14

Resistance is measured in

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
2 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
3 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
4 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
5 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
6 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
7 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
8 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
9 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
10 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these

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