If the potential across a circuit is 480 volts and the current is 50 amps, what is the resistance of the circuit?

To find the resistance of the circuit, you can use Ohm's Law, which states that voltage (V) equals current (I) multiplied by resistance (R). The formula can be rearranged to solve for resistance:

[ R = \frac{V}{I} ]

In this scenario, the voltage across the circuit is 480 volts, and the current flowing through the circuit is 50 amps. When you substitute these values into the rearranged formula, it looks like this:

[ R = \frac{480\text{ volts}}{50\text{ amps}} ]

Calculating the right side gives:

[ R = 9.6 \text{ ohms} ]

Therefore, the resistance of the circuit is 9.6 ohms, which aligns with the correct answer choice. Understanding how to apply Ohm's Law is essential in electrical theory and practical applications because it allows you to determine how voltage, current, and resistance interact within a circuit.