Electromagnetism mcqs

1. spots are formed on screen having ,In cathode ray oscilloscope by…

A. anode

B. cathode

C. matrix

D. grid

2. Quantity that is not affected by magnetic field …

A. moving charge

B. change in magnetic flux

C. current flowing in conductor

D. stationary charge

3. Device used to measure potential difference between two points in volts called…

A. ohmmeter

B. odometer

C. ammeter

D. voltmeter

4. When a charged particle moves at right angle to a magnetic field quantity that changes called…

A. momentum

B. speed

C. energy

D. moment of inertia

5. Cathode ray oscilloscope displays graph of waveforms based on which of the following…

A. current

B. temperature

C. potential difference

D. voltage

6. Magnetic field inside of a solenoid is…

A. zero

B. weak

C. uniform

D. non-uniform

7. Magnetic field is set up in a region of having current carrying

A. rod

B. wire

C. blog

D. plate

8. Electric instrument used to measure current in amperes is known as

A. odometer

B. voltmeter

C. ohm meter

D. ammeter

9. When an electron is projected at right angle to uniform magnetic field then it will move along through.

A. helical path

B. circle

C. straight line

D. cube

10. Moving charge experiences magnetic force because of ….

A. magnetic flux

B. magnetic field

C. magnetic current

D. none of above.

11. In moving coil galvanometer, pole faces of U-shaped magnet are made concave wave…

A. to make the field radial

B. to increase the field

C. to weaken the field

D. both a and b

12. In moving coil galvanometer, a soft iron cylinder is placed inside coil …

A. to make zero field

B. to make stronger field

C. to make galvanometer heavier

D. both a and b