# 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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