A supercapacitor differs from an ordinary capacitor asa.supercapacitor plates have a much bigger area then ordinary capacitorb.In supercapacitors the distance between plates is much smallerc.both are trued.none is true

The correct answer is c. Both are true.

Supercapacitors, also known as ultracapacitors or double-layer capacitors, differ from ordinary capacitors in two main ways:

a. Supercapacitor plates have a much bigger area than ordinary capacitors. This is because supercapacitors use a different type of material for their plates, which allows them to have a much larger surface area. This larger surface area allows supercapacitors to store a much larger amount of energy than ordinary capacitors.

b. In supercapacitors, the distance between plates is much smaller. This is because supercapacitors use a very thin layer of electrolyte as the separator between the plates, which reduces the distance between them. This smaller distance allows for a much larger capacitance, which is the ability of a system to store an electric charge.

So, both statements are true, making option c the correct answer.