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Statement of a problem № 41912

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Suppose a current is given by the equation l = 1.80sin 210r, where l is in amperes and t in seconds. (a) What is the frequency? (b) What is the rms value of the current? (c) If this is the current through a 42.0-Ω resistor, write the equation that describes the voltage as a function of time.




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