Diodes/ LED's

Question 1

What are diodes?

Answer 1

• Diodes are components that allow current to flow in one direction only.

Question 2

Why do diodes not allow current to flow in the reverse direction?

Answer 2

• The resistance is too high in reverse direction.

Question 3

Why are diodes useful?

Answer 3

• Diodes protect appliances that could break if current flows in negative direction.

Question 4

What is an LED?

Answer 4

• LED emitts light when current flows through correct direction.

Question 5

Why is a thresh hold voltage useful?

Answer 5

• Avoids current “accidently” flowing in opposite direction.