If an inductor, a capacitor, and a resistor are connected in series with a sine wave generator, what quantity will be common to all three components

Explanation:

For series connected elements (an inductor, a capacitor, and a resistor) in a simple AC circuit, the same current will flows through the elements since are are no presence of nodes between the elements. The total current from the source is what will flow through all of them.

For example, let assume the total current flowing in the circuit is 3A, the amount of current that will flow through the inductor, capacitor and resistor will be the same 3A because of the nature of their connection (series). It is the voltage across each of them that differs.

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

v=ir = 3x15 =45 v