A model electric train requires 4 V to operate. If the primary coil of its transformer has 300 windings, how m?

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.

Know better? Leave your own answer in the comments!