Help~physics killing~

• jlzk

  12 Jul 07, 21:31

  Write down in symbol form,the 3 equations (known as Joule's laws) relating the electrical energy E,Current I,Voltage V,time t,and the electrical resistance R of a heater coil.
  (a)E=
  (b)E=
  (c)E=
• kct360

  12 Jul 07, 22:08

  E= V^2/R *T
  
  E=I^2*R*T
  
  E=IVT
  
  are these the ones?
  
  
• fudgester

  12 Jul 07, 22:10

  Just remember....
  
  Energy = Power x time for any system.
  
  For an electrical system.... Power = Voltage x current.
  
  Remember that Voltage = current x resistance.
  
  From this you can quickly work out all the equations that you need for electrical energy.
• eagle

  12 Jul 07, 22:50

  Originally posted by fudgester:

  Energy = Power x time for any system.
  

  This is very important...
  
  To the two persons who replied:
  Thanks for the replies...
• jlzk

  12 Jul 07, 23:08

  Ya sincerely thanks if not tommorow Friday 13 Physics lesson i will drop dead in class..thanks alot