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IIT-JEE 2007 Paper 2 Offline
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Two wires each carrying a steady current I are shown in four configurations in Column I. Some of the resulting effects are described in Column II. Match the statements in Column I with the statements in Column II and indicate your answer by darkening appropriate bubbles in the $$4 \times 4$$ matrix given in the ORS.

Column I Column II
(A) Point P is situated midway between the wires.
(P) The magnetic fields (B) at P due to the currents in the wire are in same direction.
(B) Point P is situated at the mid-point of the line joining the centers of the circular wires, which have same radii.
(Q) The magnetic fields (B) at P due to the currents in the wires are in opposite directions.
(C) Point P is situated at the mid-point of the line joining the centers of the circular wires, which have same radii.
(R) There is no magnetic field at P.
(D) Point P is situated at the common center of the wires.
(S) The wires repel each other.

A
$$[\mathrm{A} \rightarrow(\mathrm{P}, \mathrm{R}) ; \mathrm{B} \rightarrow(\mathrm{P}); \mathrm{C} \rightarrow(\mathrm{P}, \mathrm{R}); \mathrm{D} \rightarrow(\mathrm{Q, R})]$$
B
$$[\mathrm{A} \rightarrow(\mathrm{Q}, \mathrm{R}) ; \mathrm{B} \rightarrow(\mathrm{P}); \mathrm{C} \rightarrow(\mathrm{Q}, \mathrm{R}); \mathrm{D} \rightarrow(\mathrm{Q})]$$
C
$$[\mathrm{A} \rightarrow(\mathrm{P}, \mathrm{R}) ; \mathrm{B} \rightarrow(\mathrm{P}); \mathrm{C} \rightarrow(\mathrm{P}, \mathrm{R}); \mathrm{D} \rightarrow(\mathrm{Q})]$$
D
$$[\mathrm{A} \rightarrow(\mathrm{S}, \mathrm{R}) ; \mathrm{B} \rightarrow(\mathrm{P}); \mathrm{C} \rightarrow(\mathrm{P}, \mathrm{R}); \mathrm{D} \rightarrow(\mathrm{Q})]$$
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