The batteries in a portable CD player are recharged by a unit that plugs into a wall socket. Inside the unit is a step-down transformer with a turns ratio of 1:13. The wall socket provides 120 Volts. What voltage does the secondary coil of the transformer provide?
transformer equation follows:
V_p/V_s = N_p /N_s
The ratio of ...
The solution shows how to calculate the voltage output from the secondary coil of the transformer.