Lenz’s law of electromagnetic induction states that ____________
A. e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit B. the induced e.m.f. in a circuit is proportional to the rate of change f the number of lines of force linking the circuit C. the induced current in a conductor is in such a direction as to oppose the change producing it D. a force is exerted in a current-carrying conductor in a magnetic field. E. the induced e.m.f. is proportional to the current producing the magnetic flux.