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The primary coil of an ideal transformer has 720 turns, and the secondary coil has 170 turns.

A) If the primary coil carries 17A at a voltage of 120 V, what are the voltage?

B) the output current of the secondary coil?
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Added Tue, 04 Aug '15
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A. apply in a transformer N1/N2 = V1/V2 = I2/i1

so V2 = V1 * N2/N1

V2 = 120* 170/720

V2 = 28.33 volts

---------------------------

i2 = i1 * N1/N2

i2 = 17* 720/170

i2 = 72 Amps
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Added Tue, 04 Aug '15
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