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: Column I Column II (A) Point P is situated midway between the wires. (P) The magnetic field (B) at P due to the currents in the wires are in the same direction. (B) Point P is situated at the midpoint of the line joining the centres of the circular wires, which have same radii. (Q) The magnetic field (B) at P due to the currents in the wires are in opposite directions. (C) Point P is situated at the midpoint of the line joining the centres of the circular wires, which have same radii. (R) There is no magnetic field at P. (D) Point P is situated at the common centre of the wires. (S) The wires repel each other. [JEE Adv 2007 P2]

Correct Answer is : (A)→(Q), (R); (B)→(P); (C)→(Q), (R); (D)→(Q)

(A)→(Q), (R); (B)→(P); (C)→(Q), (R); (D)→(Q)

(A)→(P), (R); (B)→(P); (C)→(Q), (R); (D)→(P)

(A)→(Q), (R); (B)→(P); (C)→(Q), (S); (D)→(Q)

(A)→(Q), (R); (B)→(Q); (C)→(Q), (R); (D)→(Q)

IIT JEE Advanced 2007 Paper 2

Section: Physics

Question : 21 of 66

Marks: +1, -0

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:

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

[JEE Adv 2007 P2]

(A)→(Q), (R); (B)→(P); (C)→(Q), (R); (D)→(Q)
(A)→(P), (R); (B)→(P); (C)→(Q), (R); (D)→(P)
(A)→(Q), (R); (B)→(P); (C)→(Q), (S); (D)→(Q)
(A)→(Q), (R); (B)→(Q); (C)→(Q), (R); (D)→(Q)

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