A dental x-ray machine has a current of 5 amps (A). If the voltage inside the unit is 60 volts (V), what is the resistance of the circuit?

To find the resistance of the circuit in a dental x-ray machine given the current and voltage, we can use Ohm's Law, which states that voltage (V) equals current (I) multiplied by resistance (R). The formula can be rearranged to calculate resistance as R = V / I.

In this case, we have a current of 5 amps and a voltage of 60 volts. Plugging these values into the formula gives:

R = 60 V / 5 A = 12 ohms.

This calculation shows that the resistance of the circuit is 12 ohms, which aligns with the provided answer. Understanding the relationship defined by Ohm's Law is essential for working with electrical circuits, as it helps to determine how the current, voltage, and resistance interact within any given circuit.