A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how many turns are in the secondary?


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Tom  Jackson Profile
Tom Jackson answered

The ratio of the voltages on a transformer is the same
              as the ratio of the number of turns in each winding.

115/24 = 345/x, so x = 72

Arthur Wright is correct.

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