Part B For the bar to be in rotational equilibrium, should
I
be in the direction from
a
to
b
or
b
to
a
? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help the left
b
clockwise upward the right downward Gravity tends to rotate the bar about point
a
, so the magnetic force must be
?
and to to tend to rotate the bar
?
Therefore the current must flow from
?
to
?
If the current were from to
?
the bar could not balance.
?
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