What is the least dense planet in our solar system?.

Jupiter is the largest planet in the solar system, but it's Saturn—the solar system's second largest planet—that takes the prize for least dense. It's less dense than water, which has led many people to postulate that it would float.

Saturn – the solar system's second largest that takes the prize for least dense. It's less dense than water, which had led many people to postulate that it would be float.

the amount of current in the coil

current flows in a wire