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 straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 2

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

Question # 3

The vector representation of force experience give the direction of

Question # 4

The angle of deflection of coil can be measured by the

Question # 5

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

Question # 6

magnetic field is a:

Question # 7

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

Question # 8

The SI unit of magnetic flux is

Question # 9

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

Question # 10

Flurescent screen is a screen where visible spot

Question # 11

It is customary represent a current flowing towards the reader by a symbol

Question # 12

F = I(L x B) is a

Question # 13

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

Question # 14

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

Question # 15

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
2 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
3 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
4 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
5 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
6 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
7 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
8 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)
9 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
10 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

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