CBSE Class 7 Science
Question 5 of 16
Electricity Circuits and Their Components — Question 5
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Question Why did we use metal wire for making the electric circuit? Can we not use some other material for the wires? (Page 34)
Metal wires (usually copper) are used because metals are good conductors of electricity. They allow electric current to flow easily. While other materials could be used but they would not conduct electricity as efficiently. For example, rubber and plastic are insulators, so they can’t carry current.