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JEE Main20198 Apr 2019Evening ShiftPhysicsMagnetic Effects of CurrentActual

Two very long, straight, and insulated wires are kept at 90 o angle from each other in x y - p l a n e as shown in figure. These wires carry currents of equal magnitude I , whose direction are shown in the figure. The net magnetic field at point P will be:

Options

  1. A- μ 0 I 2 π d x ^ + y ^
  2. B+ μ 0 I π d z ^
  3. Cμ 0 I 2 π d x ^ + y ^
  4. DZero

Correct answer

D. Zero

Step-by-step solution

Magnetic field due to wire along x-axis: B 1 = μ 0 I 2 π d z ^ Magnetic field due to wire along z-axis: B 2 = μ 0 I 2 π d ( - z ^ ) B → n e t = B → 1 + B → 2 = 0

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