Which of these equations is correct?
resistance=potential difference×current\text{resistance} = \text{potential difference} \times \text{current}resistance=potential difference×current
resistance=current÷potential difference\text{resistance} = \text{current} \div \text{potential difference}resistance=current÷potential difference
resistance=potential difference÷current\text{resistance} = \text{potential difference} \div \text{current}resistance=potential difference÷current
resistance=power×current\text{resistance} = \text{power} \times \text{current}resistance=power×current