ELECTROMAGNETISM

FILL IN THE BLANKS

Say true or false. If false, write the correct sentences.

Find the odd one out.



DEFINE THE FOLLOWING

Magnetic field

Solenoid

Electric motor

Fleming’s right hand rule

Fleming’s Left hand rule:

Right hand thumb rule

Electro-magnetic induction.

Electric generator.




DISTINGUISH BETWEEN

ELECTRIC MOTOR V/S ELECTRIC GENERATOR

State the characteristics of magnetic lines of for...



GIVE SCIENTIFIC REASONS

Wires carrying electricity should not be touched bare footed. 

We should not use many electrical appliances simultaneously 

Alloys like alnico or nipermag are used in industries.

A magnetic crane is used to load and transport scrap iron.

During a short-circuit, the circuit catches fire.

In rainy season, we should not touch the wall of building.

Most of the electrical appliances need earthing.

Magnetic resonance imaging (MRI) is used to study the body ofpatients.

ANSWER IN DETAIL 

Electric motor.

Electric generator

Observe the figure. If the current in the coil A is changed, will some current be induced in the coil B? 

What is short circuiting ?

What is a galvanometer ? How does it work ?

State the factors on which magnetic field due to current carrying conductor depends.

State the applications of electric motor.

State general precautions for safety with respect to electricity.

Force on current carrying conductor is a magnetic field.

Use of magnetism in medical sciences.

Domestic electric circuit.

Earthing.