Question

The normal operating voltage and current for a light-emitting diode are:

• A. $60V$ and $20mA$
• B. $5V$ and $50mA$
• C. $1.7V$ and $20mA$
• D. $0.7V$ and $60mA$

Answer 1

The correct option is C $1.7V$ and $20mA$

See the image that dash line of $20mA$ is that normal cuttent for LED.

And for different colour of lights different values of voltages are there, but typically, the forward voltage of an LED is about $1.8–3.3V$