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Physics · PYQ NEET UG 2019(2)

हिन्दी

A straight conductor carrying current \( i \) splits into two parts as shown in the figure. The radius of the circular loop is \( R \). The total magnetic field at the centre \( P \) of the loop is,

  1. \( \frac{\mu_0 i}{2R} \), inward
  2. Zero
  3. \( \frac{3\mu_0 i}{32R} \), outward
  4. \( \frac{3\mu_0 i}{32R} \), inward

Correct answer · Option 2

Zero

Explanation

Current divides inversely proportional to resistance. The two circular arcs subtend angles \( 90^\circ \) and \( 270^\circ \) producing magnetic fields in opposite directions which cancel out partially, yielding the net field.

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