Asked by Anonymous
How does the resistance of a piece of metal change if both its length and its diameter are reduced to one half their original values?
.. im confused because i don't know what the shape of the metal is...please help!
.. im confused because i don't know what the shape of the metal is...please help!
Answers
Answered by
drwls
Assume it is a wire (cylinder) and that current flows along the length.