Atransformer connected to a 120--v ac line is to supply 12.0v (rms) to a portable electronic device. the load resistance in the secondary is 4.70 ohms

1) what should the ratio of primary to secondary turns of the transformer be?

n1/n2 =

2) what rms current must the secondary supply?

i = a

3) what average power is delivered to the load?

p = w

4) what resistance connected directly across the source line (which has a voltage of 120? v ) would draw the same power as the transformer?

r = ohms