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Question:

A 20-mH inductor is connected to a standard electrical outlet (rms voltage 120 V, frequency f60 Hz).?

Determine the energy (in J) stored in the inductor at t1/180 s, assuming this energy is zero at t0. Round you answer to two decimal points.

Answer:

Energy Li?/2 Energy also Power/time iv/t
resistancesqrt(R^2 + (Xc-Xl)^2) the place Rresistance to be got here across Xccapacitive reactanceone million/?Cone million /(one thousand ×2 × 3.14 × 4 × 10^-6)39.8 ohm (?2?f,fone thousand Hz) Xlinductive reactance ?L one thousand × 2 ×10^-3 × 2 × 3.14 12.fifty six ohm resistancesqrt(R^2 + (39.8-12.fifty six)^2) voltage/contemporarysqrt(R^2 + (27.24)^2) a hundred and twenty/0.4sqrt(R^2 + 742.01) on fixing,R298.76 ohm

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