A circular loop of radius \( 0.3 \mathrm{~cm} \) lies parallel to a much bigger circular loop of...

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A circular loop of radius \( 0.3 \mathrm{~cm} \) lies parallel to a much bigger circular loop of radius \( 20 \mathrm{~cm} \). The centre of the small loop is on the axis of the bigger loop. The distance between their centres is \( 15 \mathrm{~cm} \). If a current of 2.0 A flows through the smaller loop, then the flux linked with bigger loop is
(a) \( 9.1 \times 10^{-11} \) weber
(b) \( 6 \times 10^{-11} \) weber
(c) \( 3.3 \times 10^{-11} \) weber
(d) \( 6.6 \times 10^{-9} \) weber
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