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 most suitable material for permanent magnet is

Question # 2

The unit of flux density is also given by

Question # 3

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 # 4

Which is modified form of galvanometer

Question # 5

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

Question # 6

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

Question # 7

A field is uniform and much stronger:

Question # 8

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

Question # 9

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

Question # 10

A resistance used in voltmeter is called

Question # 11

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 12

Resistance is measured in

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
3 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
4 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
5 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
6 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
7 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
8 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
9 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
10 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque

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