A current carrying rod AB is placed perpendicular to an infintely long current carrying wire as shown in figure. The point at which the conductor should be hinged so that it will not rotate (AC=CB)
A
A
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B
somewhere between B and C
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C
C
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D
somewhere between A and C
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Solution
The correct option is D somewhere between A and C Variation of magnetic force on wire ACB is as shown in figure. Point of application of net force lies somewhere between A and C.