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Olympiad workbookNSEPMagnetic Effects of Current

Two long parallel wires carry currents of equal magnitude (I) but in opposite directions. These wires are suspended from fixed rod PQ by four chords of equal length L as shown. The mass per unit length of each wire is , the value of angle substended by two chords OA and OB , assuming it to be small, is

Options

  1. A=I ₀ 4 g L
  2. B=I ₀ 1 g L
  3. C=I ₀ 4 g L
  4. D= I ₀ ~g ~L

Correct answer

B. =I ₀ 1 g L

Step-by-step solution

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