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Question

A wire loop PQRSP is constructed by joining two semi-circular coils of radius r1 and r2 respectively, as shown in the figure. If the current flowing in the loop is I, then the magnetic induction at the point O is:

A
μ0I4[1r11r2]
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B
μ0I4[1r1+1r2]
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C
μ0I2[1r11r2]
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D
μ0I2[1r1+1r2]
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