Posted by **John** on Sunday, February 25, 2007 at 8:18am.

Just a quick one:

Is current (I) directly proportional to resistance (R) in a piece of resistance wire? Would the current - resistance graph be a straight line or a curve? Help greatly appreciated.

It would not be a straight line. For a fixed applied voltage V, current is

I = V/R

A graph of I vs R will be curved. It is called a hyperbola-shaped line

Thanks drwls :)

## Answer this Question

## Related Questions

- algebra - If the voltage V, in an electric circuit is held constant,the current,...
- Math - The electrical resistance of a wire is directly proportional to its ...
- physics..resistance and all - can someone tell me why when the length of a wire ...
- math - In an electrical circuit, the current passing through a conductor varies ...
- math - In an electrical circuit, the current passing through a conductor varies ...
- math - In an electrical circuit, the current passing through a conductor varies ...
- physics - A certain copper wire has a resistance of 12.0 \Omega.At what point ...
- Physics - (1) 45 micro coulombs of charge is passed through a wire in 35 seconds...
- Math - Amperes (abbreviated amp) measure the strength of electric current. An ...
- Physics resistance question - A piece of copper wire of resistance R is cut into...