Electrical principles

Electrical principles

1. Resistance

   • R= V/I
   • a measure of the difficulty to pass an electric current through that conductor

2. Power

   • P=V*I
   • supplies a device with mechanical or electrical energy.

3. Energy

   • W=P*T
   • the property that must be transferred to an object in order to perform work on – or to heat – the object. can be converted in form, but not created or destroyed

4. Resistance connected in series

   • R=R1+R2...

5. Resistors connected in parallel

   • 1/R = 1/R1+1/R2...