Physics
Class 10
Ohm's law
Why does a bulb glow brighter when connected directly to a battery than when connected via a resistor?
1 answers
50 votes
1 Answers
uniboardhub
3 months ago
Ohm's law: V = IR. Adding a resistor reduces the current (I), meaning less energy reaches the bulb, so it glows dimmer. Direct connection = maximum current = brighter glow!
Join the Discussion
Share your knowledge and help others learn by answering this question.
Help students understand complex topics
Build your reputation as an expert
Contribute to the learning community