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

In the region surrounding a current carrying wire:

Question # 2

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

Question # 3

The current sensitivity of the galvanometer is

Question # 4

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

Question # 5

A beam of electrons is provided by an

Question # 6

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 7

F = I(L x B) is a

Question # 8

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 9

Weber is a unit of

Question # 10

Magnetic lines of force:

Question # 11

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

Question # 12

The vector representation of force experience give the direction of

Question # 13

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 # 14

Magnetic flux and flux density are related by

Question # 15

The unit of magnetic flux is

Question # 16

Ammeter is used to measure

Question # 17

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 18

A voltmeter is used to measure the

Question # 19

Which is modified form of galvanometer

Question # 20

The gavanometer constant of a moving coil galvanometer is given by

Question # 21

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

Question # 22

The SI unit of magnetic flux is.

Question # 23

How many number of anodes used in electron gun

Question # 24

Lorentz force is defined as

Question # 25

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 26

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

Question # 27

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 # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
2 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
3 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
4 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
5 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
6 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
7 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
8 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
9 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
10 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

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