PHYSICS EQUATIONS

PHYSICS EQUATIONS

1. CHARGE

   • the amount of negative electrons in a circuit
   • Charge = current x time
     • C = I x t

2. RESISTANCE

   • anything that opposes the current
   • Resitance = voltage / current
     • R = V / I

3. S.L. Heat Energy

   • Energy = mass x S.L.H
     • E = mL

4. S.H.C

   • the specific heat capacity is the amount of energy that is required to raise 1kg of a substance by 1 degrees celsius
   • change in energy = mass x change in temp

5. POWER

   • the rate of doing work, the unit for this is joules per second (J/s) more commonly known as a watt.
   • power= voltage x current
     • P= V X I
   • power = energy / time
     • P= E / t
   • power = current^2 x resistance
     • P = I ^ 2 x R