According to the Lenz’s law (which was introduced by a Russian of Baltic German physicist Heinrich Friedrich Emil Lenz in 1834), the direction of current can be found. when the current through a coil changes magnetic field, the voltage is created as a result of changing magnetic field, the direction of the induced voltage is such that it always.

OpenStax Learning Objectives By the end of this section, you will be able to: Use Lenz’s law to determine the direction of induced emf whenever a magnetic flux changes Use Faraday’s law with Lenz’s law to determine the induced emf in a coil and in a solenoid