CAPE Physics Unit 1 · 2007 · Paper 1 · Question Q1

Which S.I. unit could be used to express the power of a light bulb?

1. (A)\text{kg m}^2 \text{s}^{-2}
2. (B)\text{kg m}^{-1} \text{s}^{-3}
3. (C)\text{kg m}^2 \text{s}^{-3}
4. (D)\text{kg s}^{-2}