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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 smaller loop is on the axis of the bigger loop. The distance between their
P centres is \( 15 \mathrm{~cm} \). If a current of \( 2.0 \mathrm{~A} \) flows through the

W bigger loop, then the flux linked with smaller loop is
(2013 Main)
(a) \( 9.1 \times 10^{-11} \mathrm{~Wb} \)
(b) \( 6 \times 10^{-11} \mathrm{~Wb} \)
(c) \( 3.3 \times 10^{-11} \mathrm{~Wb} \)
(d) \( 6.6 \times 10^{-9} \mathrm{~Wb} \)
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