Physics for IGCSE & O level - Electricity (Section 8 - No. 20)
If the current is kept constant, how does doubling the resistance affect the voltage?
The voltage is halved.
The voltage is doubled.
The voltage remains the same.
The voltage is quartered.
คำอธิบาย
Ohm's Law: V = IR; doubling R will double V if I is constant.