Question # 1

The magnetic field outside the solenoid due to current is

Choose an answer

strong

zero

weak

uniform

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

Choose an answer

weak

strong and uniform

none-uniform

zero

Tesla is the unit of

Choose an answer

Magnetic induction or flux density

Magnetic flux

Self inductance

None of these

The SI unit of magnetic flux is.

Choose an answer

weber

Nm^-1A^-1

tesla

gauss

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

Choose an answer

+e(v x B)

-C(V x B)

+e²(v x B)

-e(v²x B)

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:

Choose an answer

Becomes Half

Becomes double

Is not affected

Becomes one fourth

None of these

Which is modified form of galvanometer

Choose an answer

potentiometer

battery

voltmeter

slide wire bridge

The pointer of a magnetic compass:

Choose an answer

Is affected only by permanent magnets

Align itself parallel to the applied magnetic field

Vibrates in the magnetic field of the current

Aligns itself perpendicular to the magnetic field

Both (C) and (D)

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Choose an answer

n/AL

Al/n

nAL

nA/L

The most suitable material for permanent magnet is

Choose an answer

cobalt

iron

steel

alaminium

In the expression of force experienced by electron, the direction of both v and B are

Choose an answer

parallel

zero

perpendicular

none of them

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

Choose an answer

F=eVB

F=e²V/B

F=e/VB

F=B²/ev

The permeability of free space is measured in:

Choose an answer

Wb/Am

Wb A/m

Am/Wb

m/Web A

None of these

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

Choose an answer

0

1

0.5

-1

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

Choose an answer

magnetic flux

magnetic flux density

magnetic induction

magnetic field intensity

More Classes

Other Links

Physics ECAT Pre Engineering Chapter 14 Electromagnetism Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer