why the left circuit is on

103

01:14:33

why the left circuit is on, and the right one is not?

published 10 years ago

jchmiel

10 years ago

Because you need more voltage to light the leds when they are in series. When they are parallel to each other you need more current. Technically they are both "on". Double your voltage on the right.

amitgg

10 years ago

Yeah.... Those LED's wont lit until u give potential difference of 2V to each of them..

wyoelk

10 years ago

The leds take 20ma to light.

cjdelphi

10 years ago

Also add resistor (s)

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