Why are Watt Hours not Watts per Hour? Are they the same thing?

Question

Why are Watt Hours not Watts per Hour? Are they the same thing?

In: 1289

Answer 1

“Per” usually means divided by. As in, A divided by B. But when you combine two units without using “per” it indicates multiplication, as in A times B. For example, “newton meters” comes from multiplying a number of newtons times a number of meters.