PHYSICS EQUATIONS

Nota:

• the amount of negative electrons in a circuit

1. Charge = current x time

   Nota:

   • C = I x t

Nota:

• anything that opposes the current

1. Resitance = voltage / current

   Nota:

   • R = V / I

1. Energy = mass x S.L.H

   Nota:

   • E = mL

Nota:

• the specific heat capacity is the amount of energy that is required to raise 1kg of a substance by 1 degrees celsius

1. change in energy = mass x change in temp

Nota:

• the rate of doing work, the unit for this is joules per second (J/s) more commonly known as a watt.

1. power= voltage x current

   Nota:

   • P= V X I
2. power = energy / time

   Nota:

   • P= E / t
3. power = current^2 x resistance

   Nota:

   • P = I ^ 2 x R