The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. Thus, a transformer is plugged into the wall socket and produces the necessary voltage for charging the batteries. The batteries are rated at 9.0 V, and a current of 196 mA is utilized to charge them. The wall socket provides a voltage of120 V.
a) Decide the turn’s ratio of the transformer.
b) What is the current coming from the wall socket?
c) Discover the average power sent to the batteries and the average power delivered by the wall socket.