If Interest on drawings are charged on drawings against capital, will they be included in Capital A/c or Current A/c (if the Capitals are fixed)

Dear student,
Interest charged on drawings ( whether from capital a/c or current a/c ) is recorded on the debit side of the current a/c (when capitals are fixed), because it is an expense for the partner. So, according to nominal account rules, we debit the expenses. 
In case of fixed capital system, only capital brought down, addition of new capital and withdrawal of capital are recorded. 
Capital drawings are recorded in this capital account but, interest on that withdrawal is recorded in the current account. 
Regards