Explanation:
electric current is the answer
Explanation:
you can see this example to undersranding the question
There are 6 significant figures as trailing zeros count.
One Astronomical Unit is the distance between the Earth and the Sun, this acts as a sort of a cosmic metre stick. Astronomers don't and cannot measure distances. Distances are merely inferred from what actually has been measured, such as an angle, a relative luminosity, a time period