Advertisements
Advertisements
प्रश्न
When does an electric short circuit occur?
उत्तर
Direct contact between the live and neutral wires can result in an electric short circuit. This happens when,
- the insulation of wires is damaged or
- there is a fault in the electric appliance.
APPEARS IN
संबंधित प्रश्न
What happens to the resistance of the circuit during a short circuit?
How can the effects of overloading be avoided?
At the time of short circuit, the current in the circuit ______.
State whether the following statement is true or false.
A wire with a green insulation is usually the live wire of an electric supply.
What is the function of an earth wire?
Draw a circuit diagram to show how a soft iron piece can be transformed into an electromagnet.
Describe how an electromagnet could be used to separate copper from iron in a scrap yard.
List the colours of the three wires in the cable connected to the plug of an electric iron.
In household circuits, is a fuse wire connected in series or in parallel?
What is the main propose of earthing an electrical appliance?
Give two reasons why different electrical appliances in a domestics circuit are connected in parallel.
Fill in the following blank with suitable words:
A fuse should always be places in the ........... wire of a mains circuit.
How are the electrical appliances connected in a house circuit: in series or in parallel? Give reason.
State the voltage at which electricity is supplied to our houses.
Answer the following question:
What is overloading? When does it occur? How can overloading be avoided?
Write the function of the voltmeter in an electric circuit.
Which among these are the main characteristics of fuse element?