Column I | Column II |
A. Point P is situated midway between the wires above. B. Point P is situated at the midpoint of the line joining the centres of the circular wires, which have same radii. | (i) The magnetic fields B at P due to the current in the wire are in the same direction. (ii) The magnetic fields B at P due to the current in wires are in the opposite directions. (iii) Magnetic field at P is zero. |
Answer:
(i) A matches with (ii) and (iii).
Applying Fleming's Left Hand Rule, the magnetic field at P due to the current
will be equal and in opposite direction.
(ii)
B match with only (i) in column II. Applying Fleming's Left Hand Rule, the
magnetic field at P due to two currents in opposite directions will be in
directions.
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