Lenz’s law of electromagnet states that
- the induced charge is constant for a fixed change of force
- a force is exerted on a current-carrying conductor in a magnetic field
- 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
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the induced current in a conductor is in such a direction as to oppose the change producing it
- e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit