Four bar magnets are placed end-to-end along a line as $[N-S] [X-Y] [S-N] [Z-W]$. If end $S$ repels end $X$,…
Four bar magnets are placed end-to-end along a line as $[N-S] [X-Y] [S-N] [Z-W]$. If end $S$ repels end $X$, and end $N$ repels end $Z$, what are the poles at $X$ and $Z$ respectively?
$X = \text{South}, Z = \text{North}$
$X = \text{North}, Z = \text{South}$
$X = \text{South}, Z = \text{South}$
$X = \text{North}, Z = \text{North}$
Solution
Like poles repel. Since $S$ repels $X$, pole $X$ must be South. Since $N$ repels $Z$, pole $Z$ must be North.