A CD Player with a resistance of 40 ohms has a current of 0.1 amps flowing through it. How many volts supplies the CD player?
Start with the Equation of Ohm's Law
Since voltage is what needs to be found and the equation is already interms of current and resistance, substitute in the values for I and R.
Solve for Voltage (V).
This activity was created by Steven Gutierrez, for the Learning Technologies Project, at the NASA Glenn Research Center, in 1996.