Advertisements
Advertisements
प्रश्न
Why is the filament in an electric bulb coiled?
Advertisements
उत्तर
To have a high resistance, the filament wire is long and thin. To fit in a small space it is coiled.
संबंधित प्रश्न
A switch is connected to the .......... wire.
Fuse wire is an alloy of
A fuse wire should have
State one property of the material of a fuse wire.
How does a fuse protect the electric wiring (or an appliance) from being damaged?
Name the material and type of wires for the following:
(a) Connecting wires for lighting
(b) Fuse wire
(c) Heating elements
(d) Connecting wires of a power line
(e) Earthing elements
Out of the wires- live, neutral and earthing, on which line will you connect the fuse and the switch. Give reason for your answer.
Live wire is also called ______ wire.
Why mica is preferred to other insulators in an electric iron?
What is the colour code for the insulation on the neutral?
