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 current sensitivity of the galvanometer is

Question # 2

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

Question # 3

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

Question # 4

The torque per unit twist of coil is called

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 10

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 11

Lorentz force is defined as

Question # 12

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 13

Weber is a unit of

Question # 14

Flurescent screen is a screen where visible spot

Question # 15

The most suitable material for permanent magnet is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
2 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
3 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
4 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
5 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
6 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
7 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
8 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
9 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
10 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium

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