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

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 # 2

Flurescent screen is a screen where visible spot

Question # 3

In the expression of force experienced by electron, the direction of both v and B are

Question # 4

Resistance is measured in

Question # 5

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:

Question # 6

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

Question # 7

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 # 8

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 9

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 # 10

Strength of magnetic field is measured in SI units, in:

Question # 11

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

Question # 12

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 # 13

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 14

Tesla is the unit of

Question # 15

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

Question # 16

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 17

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

Question # 18

The unit of flux density is also given by

Question # 19

A resistance used in voltmeter is called

Question # 20

Electron gun consist of

Question # 21

The force acting on a charge moving in a magnetic field

Question # 22

Weber is a unit of

Question # 23

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 24

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 25

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

Question # 26

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

Question # 27

A galvanometer is an instrument used to

Question # 28

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

Question # 29

The direction of lines of force depends upon the direction of

Question # 30

The most suitable material for permanent magnet is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
2 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
3 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
4 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
5 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
6 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
7 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
8 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
9 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
10 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2

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