Verified answer

http://lmgtfy.com/?q=Ohm%27s+Law

V=I x R

V= Voltage

I= Current

R = Resistance

With the change in voltage ,current also changes where resistance is constant.

For complete understanding of Electric Circuits and Ohms Law you can read and solve objective type questions here :

V= I/R

Voltage (potential) = I (current) divided by R (resistance)

So if you have a resistance of 20 ohms in a circuit and a current of 4 amps then the voltage in the circuit would be .2 volts