(a)[2]
Apply the definition of power to demonstrate that the SI base units of power are $\text{kg m}^2\text{ s}^{-3}$.
(b)[2]
Use an electrical power equation to find the SI base units of potential difference.
Physics 9702 · AS & A Level · Potential difference and power
Potential difference and power — practice question
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Power may be written as work done divided by time, or energy divided by time, or as $(\text{force} \times \text{distance})/\text{time}$” …
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