A) If I decreases, A will repel B
B) Whether I increases or decreases, B will not experience any force
C) If I increases, A will repel B
D) If I increases, A will attract B
Correct Answer: C
Solution :
If I increases then magnetic field in coil will be increases and \[\overset{\to }{\mathop{B}}\,\]will acts as shown in ring B I will induce in Such away that will opposes the increases of I in electromagnet. Hence in B direction of \[\overset{\to }{\mathop{B}}\,\]will be as shown. Hence repel B.You need to login to perform this action.
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