Physics for IGCSE & O level - Electricity (Section 12 - No. 42)
In a circuit, what is the relationship between voltage and current when resistance is constant?
Voltage and current are inversely proportional.
Voltage and current are directly proportional.
Voltage and current have no relationship.
Voltage and current are equal.
解释
When resistance is constant, voltage and current are directly proportional (Ohm's Law).