Question by : A model electric train requires 4 V to operate. If the primary coil of its transformer has 300 windings, how m?
A model electric train requires 4 V to operate. If the primary coil of its transformer has 240 windings, how many windings should the secondary have if the primary is connected to a 120 V household circuit?
Best answer:
Answer by rex
N / 240 = 4 / 120
N = 8
That is the number of turns needed for the secondary.
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