Advertisements
Advertisements
प्रश्न
To which wire is the metallic case of an electric appliance connected? Give the reason?
उत्तर
If the live wire of a faulty appliance comes into direct contact with the metallic case due to some reason, then the appliance acquires the high potential of the live wire. This may result in shock if any person touches the body of the appliance. But if the appliance is earthed, then as soon as the live wire comes in to contact with the metallic case, high current flows through the case to the earth. The fuse connected to the appliance will also blow off, so the appliance get disconnected.
APPEARS IN
संबंधित प्रश्न
Flow of protons constitutes electric current.
The red colour insulated wire in a cable is the .............. wire.
A fuse wire should have low .................
All wires used in electric circuits should be covered with
Why is the metal covering of an electrical appliance earthed?
What is the colour code for the insulation on the live wire?
Name the colour code of the wire which is connected to metallic body of an appliance.
State two advantages of ‘the ring system of house wiring’.
State the colour coding of wires in the flexible lead used for connecting the appliances to the mains in a house circuiting.
Why mica is preferred to other insulators in an electric iron?
