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

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

Question # 2

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

Question # 3

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

Question # 4

The strength of magnetic field around the current conductor is

Question # 5

In the region surrounding a current carrying wire:

Question # 6

The SI unit of magnetic permeability is

Question # 7

NmA-1 is commonly called:

Question # 8

F = I(L x B) is a

Question # 9

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 10

A galvanometer is an instrument used to

Question # 11

In a moving coil galvanometer, the deflecting couple depends upon

Question # 12

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 13

The unit of magnetic flux is

Question # 14

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

Question # 15

The magnetic field in the middle of a solenoid due to current is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
2 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
3 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
4 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
5 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
6 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
7 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
8 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
9 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
10 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform

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