-4.3 light years what is the value of the 3??​

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete