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Subject :NSO    Class : Class 7

The figure shows two parallel wires carrying current in opposite directions. The current creates strong magnetic fields around the wires. P, Q and R are plotting compasses equally spaced with Q mid-way between the wires.

The directions shown by the needles of the compasses are
(For outward direction of magnetic field take the direction of needle as upward)

A
B
C
D


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