Question
How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?
Answer Options
- A) 0.1 amperes
- B) 10 amperes
- C) 12 amperes
- D) 132 amperes
Correct Answer: B
Explanation
This calculation requires rearranging the power formula P = E \times I to solve for current (\text{I}): I = P / E.
I = 120\text{ W} / 12\text{ V} = 10\text{ Amperes}. This calculation is practical for determining the required current capacity for components like fuses and power supplies to safely handle a given electrical load.
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