Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

About resistance

  1. Mar 1, 2009 #1
    Well, these question are concerned with O-Level Physics.

    - A bulb lights brighter when resistance is higher or lower?

    - What about bulbs with filaments and thermistors?

    - Is current directly proportional to resistance for filament lamps?

    - When does current is directly proportional to resistance?

    - When does current is inversely proportional to resistance?

    - What is the relation between voltage and resistance (inversely, directly proportional)

  2. jcsd
  3. Mar 1, 2009 #2


    User Avatar
    Homework Helper

    Welcome to PF.

    So what are your thoughts on how to solve them?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook