Resistors

• Power is the rate of the use of energy
• The letter P is the symbol for Power
• The unit of power is the Watt (W)
• Power (Watts) = V (Volts) × I (Amps)
• P = V × I
• Using Ohm’s Law:
• P = I² × R  also  P = V² ÷ R  also  R = V² ÷ P

Course Guide Topics

1. Current
2. DC & AC Current
3. Voltage
4. Resistance
5. Ohm’s Law
6. Power (1)
7. Power (2)
8. Electrical Units
9. Resistors (1)
10. Resistors (2)
11. Resistors (3)
12. Resistor Question (1)
13. Resistor Question (2)
14. Resistor
15. Tolerance (1)
16. Tolerance (2)
17. Conductivity
18. Semiconductors