Posted by **rabiya** on Thursday, September 23, 2010 at 4:46pm.

A certain copper wire has a resistance of 12.0 \Omega.At what point along its length must the wire be cut so that the resistance of one piece is 5.0 times the resistance of the other?

- physics -
**chits1220**, Thursday, December 9, 2010 at 5:19pm
resistance is proportional to length, so the lengths have to be in the ratio of 1:4, so the cut must be at 1/5 the length, giving you lengths of 1/5 and 4/5 the length. Actual resistances are 10/5 ohms and 40/5 ohms, or R1=2 ohms and R2=8

## Answer This Question

## Related Questions

- Physics resistance question - A piece of copper wire of resistance R is cut into...
- Physics - (1) 45 micro coulombs of charge is passed through a wire in 35 seconds...
- Physics - A certain piece of wire has a resistance of 250 ohms. if the wire is ...
- AP Physics - A certain length of wire has a resistance of 21 ohms. This wire is ...
- Physics - A copper wire has a resistance of 24 Ω at 20°C. An aluminum wire ...
- Physics - Two wires with the same resistance have the same diameter but ...
- physics - One mile of copper wire has a resistance of 13 Ω. Using the wire ...
- Physics Resistance - A piece of wire of resistance, R and uniform cross ...
- Ap physics b - A piece of copper wire is formed into a single circular loop of ...
- Physics - A piece of copper wire is formed into a single circular loop of radius...

More Related Questions