physics

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A step-down transformer has a turns ratio of 1:10 and its primary is connected across the terminals of a standard 120 V wall socket. A 330 ohm resistor is connected across the secondary of this transformer. What power P is dissipated in the resistor?

  • physics -

    The secondary voltage is 120/10.

    Power= secondaryvoltage^2/R

  • physics -

    thanks, Bob!

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