Have YOU pondered why this is? Do YOU know what an Ampere is? A
Volt? A Watt? Can you remember your attitude about "science" when you
were in Elementary School? Middle (Junior High) School? If your
answers are "no", then you cannot even imagine how astoundingly
ignorant your "questions" are. And how much you have already suffered
and will suffer from that ignorance in times to come.
Good luck to you. You will need luck.