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

magnetic field is a:

Question # 2

A galvanometer is an instrument used to

Question # 3

The direction of lines of force depends upon the direction of

Question # 4

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

Question # 5

In the region surrounding a current carrying wire:

Question # 6

Which one of the following relations is correct?

Question # 7

Magnetic lines of force:

Question # 8

The field around a moving charge is called

Question # 9

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

Question # 10

The vector representation of force experience give the direction of

Question # 11

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

Question # 12

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 # 13

A resistance used in voltmeter is called

Question # 14

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 15

How many number of anodes used in electron gun

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

the current is pass through the straight wire. The magnetic field established around it has its lines of force:
A.

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
2 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
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 magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
5 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
6

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
7 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
8 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
9 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
10 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these

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