The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces__________?

• A. the more heat than produced by A.C. when flowing through the same circuit
• B. the same heat as produced by A.C. when flowing through the same circuit
• C. the less heat than produced by A.C. flowing through the same circuit
• D. none of the above