Diode's and LED's.

Question 1

What is a diode?

Answer 1

• Current through a diode flows in one direction only.
• Has a very high resistance in reverse direction.
• Diode’s are extremely important for controlling the flow of current in the circuit.

Question 2

What does the potential difference and current graph look like?

Answer 2

• Straight line (No current can flow in reverse direction).
• ## Curves upwards (Current in foward direction).

Question 3

What is a LED?

Answer 3

• Light Emitting Diode.
• Gives off light when a current passes through it.
• Extremely energy efficient source of light.