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

Current is measured in

Question # 2

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

Question # 3

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 4

CRO deflects the beam of

Question # 5

Which is modified form of galvanometer

Question # 6

F = I(L x B) is a

Question # 7

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

Question # 8

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

Question # 9

A beam of electrons is provided by an

Question # 10

For the conversion of galvanometer into voltmeter, we connect a

Question # 11

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

Question # 12

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

Question # 13

How many number of anodes used in electron gun

Question # 14

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

Question # 15

Tesla is the unit of

Question # 16

magnetic field is a:

Question # 17

Amperean path is a:

Question # 18

A solenoid is a coil of wire which is:

Question # 19

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 # 20

The SI unit of flux density is.

Question # 21

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 22

Weber is a unit of

Question # 23

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 # 24

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 25

Flurescent screen is a screen where visible spot

Question # 26

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

Question # 27

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

Question # 28

Method "lamp and scale arrangement" used to measure the

Question # 29

The magnetic field inside a solenoid can be increased by:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
4 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
5 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
6 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
7 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
8 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
10 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb

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