Write an expression for the instantaneous voltage delivered by an ac generator supplying 120 v rms at 60 hz. assume the voltage is 0 at time =0, and leave the factors in exact form; do not round their values. write the argument of the sinusoidal function to have units of radians, but omit the units.
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**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
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Write an expression for the instantaneous voltage delivered by an ac generator supplying 120 v rms...
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