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 current in a conductor is in such a direction as to oppose the change producing it
• C.the magnitude of the induced e.m.f. in a circuit is proportional to the rate of change of the number of lines of force linking the circuit
• D.a force is exerted on a current-carrying conductor in a magnetic Held
• E.the induced charge is constant for a fixed change of flux.