What is the relation between the brightness of a bulb and it's power and voltage?

Asked by  | 19th Feb, 2010, 09:55: PM

Expert Answer:

1/ Yes. According to Ohm's Law, V = IR, for constant V, current is inversely propotional to the resistance.

2/ Yes. A wire of higher resistance should produce more light, and it's due to "friction" i.e. frequent collisions of electrons with themselves and atoms.

The scope of this helpdesk is to answer subject related queries which are relevant to understanding concepts and solving problems. However, still you may drop an email to,





Answered by  | 20th Feb, 2010, 06:24: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.