a transformer has a primany voltage of 115 v and secondary voltage of 24 v if the number of tures in the primany is 345 how many turns are in the secondary
The voltage ratio
Vsecondary/Vprimary = 24/115 = 0.209
This equals the turns ratio
Nsecondary/Nprimary = Nsecondary/345 = 0.209
Therefore Nsecondary = 72
a man wants to illuminate 5 houses on his model railroad by wiring 5 20 ohm lamps in series.how much resistance must be added in the series in order to limit the current to the .5A needed by each light?
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