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physics prob.

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An ideal transformer has 50 turns in its primary coil and 250 turns in its secondary coil. 12 V is connected to the primary.

a)find the voltage across the secondary coil.

b) find the current in a 10-ohms device connected to the secondary.

c) find the power supplied to the primary.

  • physics prob. -

    The turns ratio N2/N1 equals the factor by which the voltage increases: V2/V1.

    V2/R is the secondary current
    V2*I2 is the secondary power, and it equals the primary power.

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