Which of the following represents the correct combination of SI base units for the permittivity of free space, ε0\varepsilon_0ε0?
kg−1 m−3 s2 A2\text{kg}^{-1}\ \text{m}^{-3}\ \text{s}^2\ \text{A}^2kg−1 m−3 s2 A2
kg−1 m−2 s4 A2\text{kg}^{-1}\ \text{m}^{-2}\ \text{s}^4\ \text{A}^2kg−1 m−2 s4 A2
kg−1 m−3 s4 A2\text{kg}^{-1}\ \text{m}^{-3}\ \text{s}^4\ \text{A}^2kg−1 m−3 s4 A2
kg m3 s−4 A−2\text{kg}\ \text{m}^3\ \text{s}^{-4}\ \text{A}^{-2}kg m3 s−4 A−2
29 exam-style questions on OCR A A Level Physics Physical quantities and units, covering Physical quantities and S.I. units. Each one has a worked solution and a mark scheme showing where the marks go.