The work done in placing a charge of `8muC` on a condenser of capacity `100muF` is

The work done in placing a charge of 8xx10^-18 coulomb on a condenser of capacity 100 micro-farad is

The work done in placing a charge of 8xx10^-18 coulomb on a condenser of capacity 100 micro-farad is

The work done in placing a charge of 8 xx 10^(-18) coulomb on a condenser of capacity 100 microfarad is .

A condenser A of capacity 4muF has a charge 20muC and another condenser B of capacity 10muF has a charge 40muC . If they are connected parallel, then

Find the work done in taking a charge 100muC from C & D.