(i) State Faraday’s second law of electromagnetic induction.
(ii) Using the principle of conservation of energy, explain the physical meaning of the negative sign that appears in the mathematical statement of the law.
(iii) A circular metallic loop is swiftly pulled out of a region where a uniform magnetic field directed into the plane of the paper exists. Describe, with proper reasoning based on Lenz’s law, the direction of the induced current in the loop
(a) while it is being pulled out of the field region, and
(b) after it has completely left the field region.