Engineering Question #1518

Furqan, a 21 year old male from Lahore asks on July 22, 2003,

Do bends in a wire affect its electrical resistance ?

viewed 13563 times

The answer

Ash Parameswaran answered on August 10, 2003

The electrical resistance of any conductor is inversely proportional to the cross section area of the conducting wire. When you bend a wire very softly so that the cross section area is not affected terribly, then the electrical resistance of a length of wire will remain the same. If you bend it in such a way that it squishes the wire and deforms the cross-sectional area, then you will notice the electrical resistance increase compared to a straight undeformed wire.

Add to or comment on this answer using the form below.

Note: All submissions are moderated prior to posting.

If you found this answer useful, please consider making a small donation to