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Question:

a single 897mH inductor is in a series circuit with a 248Hz ac voltage source. if a?

current of 72.7A is measured, what is the rms voltage (V) of the source?

Answer:

V/I impedance omega x L, where L is the inductance. omega 2 x pi x frequency. It is a pretty big current source if it can supply over 70 amps. The voltage is enormous, as Steven, below shows. Over 100 000 volts
in simple terms put in R and -j/wC in the formulation you have (R2 is the output term) and turn the crank to simplify. the respond relies upon upon whether the output is around the resistor or the capacitor.
897mH okorder
XL ω*L 2*PI*248*897*10^-3 1398 ohm V XL*I 1398*72.7 101,615 Volt (101.6 kV) it is an awfully high value .may be inductor has a value of just 897 microHenry (μH) ; in this case V is just 101.6 volt

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