A circular loop of radius $0.3\; cm$ lies parallel to a much bigger circular loop of radius $20\; cm$. The centre of the small loop is on the axis of the bigger loop. The distance between their centres is $15 cm$. If a current of $2.0\;cm$ A flows through the smaller loop, then the flux linked with bigger loop is:

Question

$\begin{array}{1 1} (1)\;9.1 \times 10^{-11} weber \\(2)\;6 \times 10^{-11} weber \\ (3)\;3.3 \times 10^{-11} weber \\ (4)\;6.6 \times 10^{-9} weber \end {array}$