Homework Help: physics

Posted by Anonymous on Sunday, March 7, 2010 at 3:36pm.

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 dont know what the shape of the metal is...please help!

physics - drwls, Sunday, March 7, 2010 at 3:40pm
Assume it is a wire (cylinder) and that current flows along the length.

Answer this Question

Related Questions

physics - A wire of length L m has 2 ohms resistance. It is stretched twice its...
physics - One mile of copper wire has a resistance of 13 Ω. Using the ...
Physics!! Help!!!!! - A wire of length L and cross-sectional area A has ...
physic - The resistance of a copper wire of diameter 10mm and length 2m is 15 &...
physics - the resistance of a certain length wire having diameter 5mm is 10 ...
physics - the resistance of a certain length wire having diameter 5mm is 10 ...
physics - When a metal pipe (open at both ends) is cut into two pieces, the ...
physics - A certain copper wire has a resistance of 12.0 \Omega.At what point ...
Physics - When a metal pipe is cut into two pieces, the lowest resonance ...
Math - The resistance(r)of a wire varies directly as the length(L)of the wire ...

For Further Reading

First Name:
School Subject:
Answer: