Lineman Apprentice Practice Test 2026 – Your All-in-One Guide to Mastering the Exam!

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What current does a 120 volt, 60 watt incandescent bulb draw?

0.25 amps

0.5 amps

To determine the current drawn by a 120-volt, 60-watt incandescent bulb, you can use the formula that relates power (P), voltage (V), and current (I). The formula is:

\[ P = V \times I \]

In this case, you have the power (60 watts) and the voltage (120 volts). To find the current, you can rearrange the formula:

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

Substituting the given values into the equation:

\[ I = \frac{60 \text{ watts}}{120 \text{ volts}} \]

Calculating this gives:

\[ I = 0.5 \text{ amps} \]

This means that a 120-volt, 60-watt incandescent bulb draws 0.5 amps. This value matches the answer, indicating the correct choice. Understanding this calculation is essential for anyone working with electrical systems, as it helps in assessing load requirements and ensuring that circuits are designed to handle the necessary current safely.

1.0 amps

1.25 amps