In which case is the current $1.0\,\text{A}$?
- Aa charge of $0.10\,\text{C}$ passes through a resistor in $100\,\text{ms}$
- Ba $10\,\text{V}$ lamp with input power $0.10\,\text{W}$
- Ca resistor of resistance $0.50\,\Omega$ with a potential difference (p.d.) of $2.0\,\text{V}$ across it
- Dtwo resistors with a current of $0.50\,\text{A}$ connected in series