Electricity and its Effects

A combination of 2 or more cells is known as

• an electric cell

• a battery

• a switch

• a bulb

Filament of a bulb is usually made up of

• nickel

• chromium

• cobalt

• tungsten

When current is switched 'on' of a bulb it converts _______ energy into _______ energy.

• Electrical, heat

• Electrical, light

• Electrical, mechanical

• Electrical, sound

An electric current can produce

• heating effect only.

• chemical effect only.

• magnetic effect only.

• chemical, heating, and magnetic effects.

Which is this type of circuit?

• Open circuit

• Closed circuit

• Both of these

• None of these

Fuse works based on the

• heating effect of electric current

• magnetic effect of electric current

• Lighting effect of electric current

Heating effect of electric current is used in

• checking temperature

• pan

• room heaters

• none of the above

Connection of more than one device/ appliance to a single socket is called-

• Overloading

• Short circuit

• Both

The heating effect of an electric current is used in

• Hair dryer

• A fan

• A computer

The purpose of a __________ is to control whether a circuit is closed or open.

• Force
• Switch
• Lever
• Energy