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A current loop, having two circular arcs joined by two radial lines is shown in the figure. It carries a current of 10 A. The magnetic field at point O will be close to : i = 10A S P O Q R

1. 1.5 × 10 –5 T
2. 1.0 × 10 –5 T
3. 1.5 × 10 –7 T
4. 1.0 × 10 –7 T

Correct answer: 1.0 × 10 –5 T

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