Magnetic field due to circular arcs

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2026 Re-NEET 1 question

  1. A current $I_0$ flows through a metallic circular loop of radius r as shown in the figure. Resistance of the segment ABC is half that of ADC. Magnitude of magnetic field at the centre O of the loop is:

2019 Odisha 1 question

  1. 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: