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.

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A model electric train requires 12 V to operate. If the primary coil of its transformer has 300 windings, how?

Question by baby: A model electric train requires 12 V to operate. If the primary coil of its transformer has 300 windings, how?
please explain!!!!!!

A model electric train requires 12 V to operate. If the primary coil of its transformer has 300 windings, how many windings should the secondary have if the primary is connected to a 120 V household circuit?

Best answer:

Answer by Ryan
30. Turns and voltage are proportional, so if you want to step down voltage by a factor of ten, you step wraps down by a factor of ten.

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