Ncert solutions

Ncert solutions

Grade 7

Electric Current and its Effects | Exercise

Question 12

Q11) 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.

Solution:

No, the electrician should not be allowed to replace the fuse in the house with a piece of wire. This is because every wire cannot be used as a fused filament. A fused filament must have a low melting point such that it could melt and break in response to a large amount of current. Most of the wires have high melting points and hence a wire cannot be used to replace the fuse.

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subject-cta

Question 12

Q11) 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.

Solution:

No, the electrician should not be allowed to replace the fuse in the house with a piece of wire. This is because every wire cannot be used as a fused filament. A fused filament must have a low melting point such that it could melt and break in response to a large amount of current. Most of the wires have high melting points and hence a wire cannot be used to replace the fuse.

Still have questions? Our expert teachers can help you out

Book a free class now

Want to top your science exam ?

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subject-cta
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