Last week we learned about circuit boards how they are just many little
eletrical circuits made as small as possible on one little board.
If you look on those circuit boards, you will probably see something brown sticking out.
That is called a resistor.
(from: wikipedia - resistors)
Remember that we learned about resistance how it's like a small part of a tube
that the electricity is going through, and it slows down the flow?
Well that's exactly what the resistors on a circuit board do.
