Question # 1

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

Choose an answer

Maximum

Equal to zero

Equal to BA

Minimum

Both (A) and (C)

The SI unit of flux density is.

Choose an answer

Tesla

Weber

Gaun

Weber/meter

Centripetal force for electron is given by

Choose an answer

mv²/ r

mv / r²

mv²/ r

mr²/ v

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Choose an answer

F=IB/L

F= L x B/I

F = IL x B

F = IL . B

Galvanometer is a device used for the detection of

Choose an answer

voltage

current

temperature

pressure

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

Choose an answer

F=e(V x B)

F= -e(V x B)

F= e(B x V)

Both a and c

A voltmeter is used to measure the

Choose an answer

potential difference

current

temperature

resistance

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

Choose an answer

ampere

volts

milliampere

ohm

The unit of flux density is also given by

Choose an answer

Weber/m²or Wb . m^-2

Weber/mor Wb . m

Weber/mor Wb . m^-1

Weber or Wb

The current is measured in

Choose an answer

volts

watt

ampere

ohm

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

Choose an answer

weak

strong and uniform

none-uniform

zero

In the region surrounding a current carrying wire:

Choose an answer

A magnetic field is setup

The lines of force are elliptical

Direction of lines of forces depends upon direction of current

Both (A) and (C)

All of these

The SI unit of magnetic induction is tesla which is equal to

Choose an answer

Newton/ampere-meter or N/A-m

Newton/ampere²-meter or N/A²-m

Newton/ampere²-meter² or N/A²-m²

Newton/ampere²-meter²or N/A²-m²

The SI unit of magnetic flux is.

Choose an answer

weber

Nm^-1A^-1

tesla

gauss

More Classes

Other Links

ECAT Physics 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

Choose an answer