Since the current in series remains the same, the fuse wire gets melted and breaks the circuit thereby protecting the appliance from getting damaged. Hence an electric fuse required in all electrical appliances for the protective reason of the appliance.
Why is an electric fuse required in all electrical appliances?
Answer: An electric fuse is required for it acts as a safety device and it checks excessive current flow. The primary use of an electric fuse is to protect electrical equipment from excessive current and to prevent short circuits or mismatched loads.
What is an electric fuse for Class 7th?
Fuse is a safety device that is a safeguard to all of our electrical appliances. They are made up of special material which melt quickly and break when large electric currents passed through it.
Which Mark is necessary on electric appliances?
ISI mark is the mark necessary for appliance approval.
Why do we use fuse in Class 7 circuit?
Solution: An electric fuse is required in all electrical appliances because it is a safety device and checks the excessive flow of electric current.
Why is an electric fuse important?
In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.
What is an electric fuse short answer?
An electric fuse is an electric device which interrupts the flow of current in an electric circuit. It is installed in a circuit to stop the flow of excessive current. A fuse is usually a short piece of wire. … Normally an alloy of tin and lead is used as the fuse wire, as it has high resistivity and low melting point.
What are the advantages of fuse?
- Fuse is cheapest type of protection in an electrical circuit.
- Fuse needs zero maintenance.
- Operation of fuse is simple and no complexity is involved.
- Fuse has the ability to interrupt enormous short circuit current without producing noise, flame, gas or smoke.
Do humans have electricity in their body?
Electricity is everywhere, even in the human body. Our cells are specialized to conduct electrical currents. Electricity is required for the nervous system to send signals throughout the body and to the brain, making it possible for us to move, think and feel.
When the switch is in the on position the electric circuit is said to be?
When switch is in ‘OFF’ position, then the circuit is open i.e. no current flows through the circuit and when switch is in ‘ON’ position, then the circuit is complete i.e. current flows through the circuit. (b) An electric cell has two terminals.
What is stored in an electric cell which produces electricity?
Answer: Electrical cell produces engery from the stored chemical energy inside. This chemical undergoes reactions leading to formation of ions which act as a charge carrier.