Privilege as to question involving incrimination

(1) No one called as a witness shall be compellable to answer any question if the answer thereto would, in the opinion of the judge, have a tendency to expose the witness or, subject to section 54 of this Act, his wife or her husband, or other party to a common law union, to any criminal charge or to any penalty or forfeiture which the judge regards as reasonably likely to be preferred or sued for. (2) No one is excused from answering any question only because the answer may establish, or tend to establish, that he owes a debt, or is otherwise liable to any civil proceeding, either at the instance of the Government or of any other person.