- #1
goonking
- 434
- 3
Homework Statement
When I took intro physics, resistors didn't have polarity.
Now, in electrical circuits class, we start seeing resistors with polarity.
For example, this diagram in our textbook:
My professor insist that this problem had a misprint/typo: the polarity on the 2 ohm resistor should be reversed because "the current flow cannot go backwards when it reaches the 2 ohm resistor".
My questions are
1) why did the textbook bother showing the polarity of the resistors if it wasn't possible to have the arrangement of this diagram?
2) if my professor is wrong, and the book is correct, In this case, is one of the resistors resisting the current flow and the other resistor is "un-resisting" the current flow (ie: "speeding up" the flow)?