If initial charge on all the capacitors were zero, work done by the battery in the circuit shown is ........... $mJ$
Medium
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(c)
$C_{\text {net }}=4 \,\mu F$
$q=40 \,\mu F$
$W=q V=40 \times 10^{-6} \times 10$
$W=400 \,\mu J$
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