This video lecture from Electromagnetic Induction ((F.Sc. 2nd year physics) This video explains the working principle of Transformer its usage in daily life , advantages , explanation and its types relation of voltage and number of turns and also the method how to increase its efficiency .Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.