Change in magnetic flux induces electromotive force. We calculate the magnitude using the following formula (negative sign from Lenz’s law):

πœ€=βˆ’dΞ¦d𝑑=βˆ’ddπ‘‘βˆ«π‘†π‘©β‹…d𝑨

Applications

Electric generator
Induction motor
Transformer
Wireless charging

References