Simple LED circuit - basic electronics

The video tutorial explains how to calculate the appropriate resistor for connecting LEDs to a power supply. It covers the calculation of resistance needed for both red and yellow LEDs, considering their voltage drops and current requirements. The tutorial also discusses choosing the correct resistor power rating and estimating battery life for the circuit. Practical examples are provided, including handling situations where the exact resistor value is unavailable.

What is the voltage drop of the LED mentioned in the text?

What is the significance of converting milliamps to amps in the calculations?

How do you calculate the required resistor value for the LED?

Why is a 390 ohm resistor chosen over a 330 ohm resistor for the LED circuit?

How long can the battery power the circuit based on the given milliamp hours?