Question # 1

The working of galvanometer depends upon torque exerted on a current carrying coil in

Choose an answer

magnetic field

electric field

gravitational field

nuclear field

The angle of deflection of coil can be measured by the

Choose an answer

one method

three method

two method

none of these

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

Choose an answer

right hand rule

left hand rule

head to tall rule

none of these

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Choose an answer

minimum

maximum

zero

none of these

It is customary represent a current flowing towards the reader by a symbol

Choose an answer

(x)

(+)

(.)

(-)

(÷)

The force acting on a charge moving in a magnetic field

Choose an answer

is perpendicular to the both magnetic field and direction of motion

is proportional to the magnetic of charges

vanishes when the motion is directly opposite to the direction of field

all of the above

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Choose an answer

Heating effect of current

Chemical effect of current

Magnetic effect of current

Electromagnetic effect of current

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m²The force on the wire is

Choose an answer

5N

4N

1.5N

6N

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Choose an answer

Greater than 300

Smaller than 300

Equal to 300

Any of (A) or (B)

Any of (A) or(C)

A voltmeter is used to measure the

Choose an answer

potential difference

current

temperature

resistance

The gavanometer constant of a moving coil galvanometer is given by

Choose an answer

K=BAN/C

K=BN/CA

K=NAC/B

K=C/BAN

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Choose an answer

-y direction

+y direction

+z direction

-z direction

None of these

Which one of the following relations is correct?

Choose an answer

1 Wb-m²= Nm^-1A^-1

1 tesla = 104 gausses

1 Wb-m²= 1 tesla

All of the above

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Choose an answer

ammeter

voltmeter

galvanometer

avo-meter

A current carrying conductor sets up its own:

Choose an answer

Electric field

Nuclear field

Magnetic field

Both (A) and (C)

All of these

Centripetal force for electron is given by

Choose an answer

mv²/ r

mv / r²

mv²/ r

mr²/ v

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