Question

The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. Therefore, 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 194 mA is used to charge them. The wall socket provides a voltage of 120 V.

(a) Determine the turns ratio of the transformer.

Ns /Np

(b) What is the current coming from the wall socket?
I_p = _____A

(c) Find the average power delivered by the wall socket and the average power sent to the batteries.
P_p = ____W
P_s = ____W

Answer 1

dt- dt- (20 No (b)l output Power CPS) 負け46ws/-75w. Tnp Powen cane eual LPs)