How many amperes will flow in a circuit containing only resistance if the resistance is 10 ohms and the voltage is 120 volts?

To determine the amount of current (measured in amperes) that flows in a circuit containing only resistance, you can use Ohm's Law. Ohm's Law states that the current (I) in a circuit is equal to the voltage (V) across the circuit divided by the resistance (R) within the circuit. The formula is expressed as:

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

In this case, the voltage is 120 volts and the resistance is 10 ohms. Plugging these values into the formula gives:

[ I = \frac{120 \text{ volts}}{10 \text{ ohms}} = 12 \text{ amps} ]

Therefore, the correct amount of current flowing through the circuit is 12 amps. This calculation directly confirms the choice identified as correct.

Using this formula is essential in electrical engineering and industrial applications for understanding how varying voltage and resistance affect the current flowing in a circuit. It highlights the direct relationship between voltage and current while illustrating how resistance serves as an opposing force to current flow.