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

Question # 2

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 # 3

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 # 4

The SI unit of flux density is.

Question # 5

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 # 6

A resistance used in voltmeter is called

Question # 7

The force acting on a charge moving in a magnetic field

Question # 8

The unit of magnetic flux is

Question # 9

For the conversion of galvanometer into voltmeter, we connect a

Question # 10

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 # 11

Method "lamp and scale arrangement" used to measure the

Question # 12

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

Question # 13

The SI unit of magnetic flux is.

Question # 14

Magnetic flux and flux density are related by

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
2 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
3 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
4 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
5 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
6 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
7 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
8 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
9 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
10 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

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