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

How many number of anodes used in electron gun

Question # 2

A resistance used in galvanometer to make it voltmeter is called

Question # 3

Tesla is the unit of

Question # 4

Amperean path is a:

Question # 5

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

Question # 6

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

Question # 7

The SI unit of flux density is.

Question # 8

The SI unit of magnetic permeability is

Question # 9

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

Question # 10

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

Question # 11

A current carrying conductor sets up its own:

Question # 12

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

Question # 13

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

Question # 14

magnetic field is a:

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
2 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
3 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
4 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
5 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
6 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
7 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
8 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
9 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
10

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

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