Question # 1

The permeability of free space is measured in:

Choose an answer

Wb/Am

Wb A/m

Am/Wb

m/Web A

None of these

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Choose an answer

IT = 10^-4G

IT = 10⁵G

IT = 10³G

IT = 10⁴G

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

Choose an answer

Zero

10⁵m

10^-10N

10⁸N

A current carrying conductor sets up its own:

Choose an answer

Electric field

Nuclear field

Magnetic field

Both (A) and (C)

All of these

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

Choose an answer

90°

75°

0°

180°

The direction of lines of force depends upon the direction of

Choose an answer

voltage

current

charges

none of these

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

To convert galvanometer into ammeter we connect

Choose an answer

small resistance in parallel with galvanometer

small resistance in series with galvanometer

high resistance in series with galvanometer

high resistance in parallel with galvanometer

The magnetic field inside a solenoid can be increased by:

Choose an answer

Increasing n

Decreasing I

Increasing I

By using iron core within solenoid

All correct except (B)

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Choose an answer

changed

zero

unchanged

none of these

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 angle of deflection of coil can be measured by the

Choose an answer

one method

three method

two method

none of these

(CRO) Cathode ray oscilloscope is a device used for high speed

Choose an answer

velocity

graph plotting

time-velocity

none of these

The SI unit of magnetic induction is

Choose an answer

Gauses

Tesla

Weber

Weber²

The current sensitivity of the galvanometer is

Choose an answer

C/BAN

BAN/C

CAN/B

CBN/A

In a moving coil galvanometer, the deflecting couple depends upon

Choose an answer

area of the coil

number of turns of coil

value of magnetic field

all of the above

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