Check sibling questions

Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?

 

Answer

thick-and-thin-wires---teachoo.jpg

Resistance is inversely proportional to Area of cross-section. 

 

A thin wire would have small area of cross section, hence more resistance.

Since the resistance is more, current would not flow easily.

 

A thick wire would have large area of cross section, hence less resistance.

Since the resistance is less, current would flow easily.

 

Hence, current would flow more easily in a thick wire.

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo