Question

4. A
circuit is one in which each electrical component is joined one after another
.
5. The speed of sound in air​

Answer 1

☆ Answer

▪︎The elements of a series circuit are connected end to end; the same current flows through its parts one after another. The elements of a parallel circuit  are connected so that each component has the same voltage across its terminals; the current flow is divided among its parts.

▪︎About 761 mph