Physics for IGCSE & O level - Electricity (Section 9 - No. 13)
In a series circuit, if the voltage across a resistor is 6V, and the current through it is 2A, what is the resistance?
3 Ohms
4 Ohms
6 Ohms
12 Ohms
説明
Resistance = Voltage / Current, so 6V / 2A = 3 Ohms.