2. The peak power consumed by a microwave is 1150 W when operated at 120 V rms.

Question

2. The peak power consumed by a microwave is 1150 W when operated at 120 V rms. What rms current does that Microwave draw? 3. The sinusoidal voltage output from the AC generator oscillates between 500 V and -500 V. The circuit is constructed with a generator, an ideal transformer and a 30 omega resistor. The generator a. is connected to 4 turns on the primary of the transformer and the resistor is connected to 8 turns on the secondary of the transformer (the figure does not show the number of turns accurately). (a) What is the maximum voltage across the resistor R? b) What is the average power dissipated in R?

Explanation / Answer

Peak voltage =500V

Rms voltage =500/SQrt(2) =353.55Volts

voltage in the secondary winding =353.55*(secondary winding turns/primary winidng turns) =707.10V

the rms voltage across resistor = 707.10V

The average power =V2/R =(707.10)2/30 =16.666kW

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