What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

Ohm's Law states that current (I) equals voltage (E) divided by resistance (R). The formula is written as I = E / R. To find the current in this circuit, divide the applied voltage of 120 volts by the resistance of 80 ohms. The math is 120 / 80, which equals 1.5 amperes. Common distractors result from using the wrong formula. For example, multiplying the two values (120 x 80) gives 9600, which would be correct if you were calculating voltage from current and resistance. Dividing them backwards (80 / 120) results in 0.667.