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

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 2

The sources of magnetic field are

Question # 3

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

Question # 4

The SI unit of flux density is.

Question # 5

The CRO is used for displaying the waveform of a given

Question # 6

Resistance is measured in

Question # 7

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

Question # 8

Weber is a unit of

Question # 9

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 10

The voltage increases linearly with

Question # 11

The unit of magnetic flux is

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
2 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
3 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
4 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
5 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
6 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
7 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
8 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
9 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
10 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance

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