Physics for IGCSE & O level - Electricity (Section 9 - No. 35)
What happens to the brightness of a bulb if the voltage is increased?
The bulb's brightness decreases
The bulb's brightness remains the same
The bulb's brightness increases
The bulb explodes
คำอธิบาย
Increasing the voltage generally increases the brightness of a bulb, assuming it can handle the increased voltage.