NCERT Solutions for Class 7 Science Chapter 14
Important NCERT Questions
7th Chapter 14 Electric Current and its Effects
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 11
An electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reasons for your response.
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No, it’s unsafe to replace a fuse with a piece of wire. Fuses protect circuits by breaking when there’s too much current, preventing fires. Using wire in place of a fuse bypasses this safety feature, risking overheating, fires, and harm. Fuses are crucial safety components in electrical systems. It’s important to use the right fuse to safeguard against overloads. Always consult a qualified electrician for proper repairs to ensure safety in the home.
Fuse is a device that is a safeguard to all of our electrical appliances. They are made up of special material which melt quickly and break when a large electric currents passed through it.
If the electrician does not use proper fuse wire, instead he uses any ordinary electric wire as fuse, it increases the risk of overheating of wires due to flow of excessive current. It may lead to short circuit in electric equipment and these appliances may catch fire. It is advised to use standard fuse wire or MCBs to prevent electrical accidents.
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