Physics for IGCSE & O level - Electricity (Section 9 - No. 7)
If the voltage across a resistor is doubled, and the resistance remains the same, what happens to the current?
It halves.
It doubles.
It remains the same.
It quadruples.
Giải thích
According to Ohm's Law (V=IR), if voltage doubles and resistance remains constant, current must also double.