Resistance & Colour Code

Resistance & Colour Code

1. What are Resistors

   • A resistor is a passive electrical component with the primary function to limit the flow of electric current.”

2. How Does it Work

   • Resistance act like water going trough a pipe
   • The pressure difference that causes the water to flow can be compared to a voltage difference which causes the flow of electrical current.

3. Ohm’s LAW

   • Voltage and Current is needed to calculated the Resistance in a circuit. To calculate the resistance, Ohm’s law will be used.
   • R = V / I I = V / R V = R x I
     • R = Resistance I = Current V = Voltage

4. Colour codes

   • The colour bands on a resistor can be used to measure the resistance value.