What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

This calculation requires applying Ohm's Law using the formula to solve for resistance: R = E / I. The provided values are an applied voltage (E) of 12 volts and a current flow (I) of 1.5 amperes. Substituting these numbers into the formula gives R = 12 / 1.5, which equals exactly 8 ohms. The distractor of 18 ohms comes from mistakenly multiplying 12 and 1.5. Another distractor, 0.125 ohms, results from putting the numbers into the formula backwards (1.5 divided by 12).