Posted by **Lauren** on Wednesday, July 25, 2012 at 9:06pm.

A wire has a resistance of 27.2 ohms. It is melted down, and from the same volume of metal a new wire is made that is 3 times longer than the original wire. What is the resistance of the new wire?

Resistance and length of wire are proportional, but what I am unsure of is if the width has to be factored in, if so, I have no idea how to do so. As you increase the length from the same volume, the width would decrease. If you don't factor this in, it's just (27.2)(3)= 81.6 ohms. Please help!

## Answer This Question

## Related Questions

- AP Physics - A certain length of wire has a resistance of 21 ohms. This wire is ...
- physics - Consider two copper wires with the same cross-sectional area. Wire A ...
- physics - A wire has a resistance of R. What will the wire's resistance be if ...
- physics - a metal wire has a resistance of 8 Ohms at a temperature of 20 degrees...
- physics Important please - A metal wire has a resistance of 8.00Ω at a ...
- physics - a wire has a resistance of 6 ohm it is stretched out to a new length ...
- Physics!! Help!!!!! - A wire of length L and cross-sectional area A has ...
- Physics - (1) 45 micro coulombs of charge is passed through a wire in 35 seconds...
- Physics - Two wires with the same resistance have the same diameter but ...
- physics - A 14.5 metal wire is cut into three equal pieces that are then ...

More Related Questions