why is spark produced inthe switch of a fan when it is switched off?
Kindly refer to the link given below to get your answer :
https://www.meritnation.com/ask-answer/question/why-a-spark-is-produced-in-the-switch-of-a-fan-when-it/physics/5388097
https://www.meritnation.com/ask-answer/question/why-a-spark-is-produced-in-the-switch-of-a-fan-when-it/physics/5388097