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

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

Question # 2

The strength of magnetic field around the current conductor is

Question # 3

if the field is directed along the normal to the area, then flux is:

Question # 4

The torque per unit twist of coil is called

Question # 5

The SI unit of magnetic induction is

Question # 6

The current is measured in

Question # 7

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 # 8

Amperean path is a:

Question # 9

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 10

Weber is a unit 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 beam of electrons is provided by an

Question # 13

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

Question # 14

The gavanometer constant of a moving coil galvanometer is given by

Question # 15

Which one of the following relations is correct?

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
2 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
3 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
4 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
5 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
6 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
7 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
8 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
9 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
10 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above

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