find the equivalent inductance seen at terminals A-B in the figure P7.28.

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the voltage across a 43mH inductor is given by v(t)=50cos(wt+6)V. find the peak current at a frequency f=(a) 1/50Hz, (b) 1Hz, (c) 30Hz, and (d) 1MHz

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Find the resistivity of a wire 2m long with resistance 70ohms and section 1.5cm in diameter.

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