In the figure below, a loop is located near a long wire with current flowing as
ID: 1409096 • Letter: I
Question
In the figure below, a loop is located near a long wire with current flowing as indicated. Choose the appropriate word choices below that correctly complete the blanks in the following four sentences: The original B field penetrating the loop points_________the page. If the current in the wire decreases, then the magnetic flux in the loop___________. Therefore, the loop generates an induced B field that points________the page. This induced B field is due to an induced current that flows_______in the loop. into, increases, into, counter-clockwise out of, increases, out of, counter-clockwise into, increases, out of, clockwise out of, decreases, into, clockwise out of, decreases, out of, counter-clockwiseExplanation / Answer
1)
The induced emf in loop ( from lenz law), the face of coil behaves like south pole, the original field from the
bar magnet penetrating the loop points into the page.
2)
The magnetic flux in the loop decreases.
3)
Loop generates induced field into the page.
4)
This field due to an induced current flows clockwise.
Therefore final answer into,decreases,into,clockwise