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

Question # 2

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 3

Which one of the following relations is correct?

Question # 4

The SI unit of magnetic induction is

Question # 5

Method "lamp and scale arrangement" used to measure the

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

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

Question # 8

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

Question # 9

Centripetal force for electron is given by

Question # 10

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

Question # 11

The torque per unit twist of coil is called

Question # 12

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

Question # 13

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 # 14

F = I(L x B) is a

Question # 15

To convert galvanometer into ammeter we connect

Question # 16

The vector representation of force experience give the direction of

Question # 17

Amperean path is a:

Question # 18

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 # 19

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

Question # 20

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

Question # 21

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

Question # 22

The current is measured in

Question # 23

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

Question # 24

In a moving coil galvanometer, the deflecting couple depends upon

Question # 25

The CRO is used for displaying the waveform of a given

Question # 26

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

Question # 27

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 28

A field is uniform and much stronger:

Question # 29

Ammeter is used to measure

Question # 30

A resistance used in galvanometer to make it voltmeter is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
2 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
3 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
4 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
5 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
6 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
7 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
8 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
9 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
10 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current

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