ECAT Pre Engineering Physics Chapter 14 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Question # 1

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 2

Avo-meter is used of measure the

Question # 3

NmA-1 is commonly called:

Question # 4

The permeability of free space is measured in:

Question # 5

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

Question # 6

if the field is directed along the normal to the area, then flux is:

Question # 7

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

Question # 8

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 9

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

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

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

The current sensitivity of the galvanometer is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
2 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
3 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
4 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
5 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
6 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
7 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
8 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
9 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
10 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current

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