LEDs

Question 1

Do LEDs have polarity?

1) Yes

2) No

Answer 1

Yes, LEDs do have polarity.

Question 2

How can we Identify what leg of an LED is Positive or Negative?

WITHOUT the legs, how can we identify which side of an LED is Positive or Negative?

Answer 2

The longer leg is the positive one while the shorter in the negative one.

When looking at the LED from above, the flatter side means negative while the rounder side means positive.