Question: A 1 2 - volt battery is connected to a circuit consisting of a resistor and an LED ( light - emitting diode ) in

A 12-volt battery is connected to a circuit consisting of a resistor and an LED (light-emitting diode) in series. The LED has a forward voltage drop of 2 volts and a forward current of 20 milliamps. The resistor is chosen to limit the current to the LED to its specified value. Calculate:
a) The resistance of the LED.
b) The resistance of the resistor.
c) The power dissipated by the LED.
d) The power dissipated by the resistor.

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