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masya89 [10]
3 years ago
8

The electric motor in a toy train requires a voltage of 4.9 v. find the ratio of turns on the primary coil to turns on the secon

dary coil in a transformer that will step the 110 v household voltage down to 4.9 v.
Physics
1 answer:
enyata [817]3 years ago
4 0

So to solve for this problem, this is computed by the following steps:

 

Vp / Vs ( = Np / Ns

Where:

Vp = Voltage Primary

Vs = Voltage Secondary

Np = Turn ratio Primary

Ns = Turn ratio Secondary.

So plugging in our values: <span>
110 / 4.9 = N</span>p / Ns<span>
N</span>p / Ns =22.44, so <span>the answer is 22 coils.</span>

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3 years ago
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