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

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

Question # 2

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 # 3

The torque per unit twist of coil is called

Question # 4

NmA-1 is commonly called:

Question # 5

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

Question # 6

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:

Question # 7

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 8

The gavanometer constant of a moving coil galvanometer is given by

Question # 9

The vector representation of force experience give the direction of

Question # 10

F = I(L x B) is a

Question # 11

A current carrying conductor sets up its own:

Question # 12

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

Question # 13

The permeability of free space is measured in:

Question # 14

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 15

The force acting on a charge moving in a magnetic field

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
2 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
3 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
4 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
5 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
6 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
7 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
8 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
9 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
10 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

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