Consider the regular array of vertical identical current carrying… - Vidyadip

MCQ

Consider the regular array of vertical identical current carrying wires (with direction of current flow as indicated in the figure alongside) protruding through a horizontal table. If we scatter some diamagnetic particles on the table, then they are likely to accumulate

✓
around regions such as $A$
B
around regions such as $B$
C
in circular regions around individual wires such as $C$
D
uniformly everywhere

✓

Answer

Correct option: A.

around regions such as $A$

a
(a)

A diamagnetic material tries to expel field lines from its volume and therefore experiences a repulsion when placed in region of strong fields. In given arrangement, field is zero in region marked $A$. So, diamagnetic powder accumulates in region $A$.

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