Which equation is used to express resistance?
- A$\text{energy} = (\text{current})^2 \times \text{resistance} \times \text{time}$
- B$\text{potential difference} = \text{current} \times \text{resistance}$
- C$\text{power} = (\text{current})^2 \times \text{resistance}$
- D$\text{resistivity} = \text{resistance} \times \text{area} \div \text{length}$