Equivalent resistance of two resistors in series combination derived.

This video shows the basic derivation for the equivalent resistance of two resistors in series combination. Conceptually, for a series combination, the current through each resistor is equal and the voltage across each resistor is additive. The lesson is explain by Mr. Pubudu Weerakoon (B.SC. , M.Sc.). For any question, you can refer to me. Thanking you.