Question

There is 20volt across the inductor and 15volt across the resistance in the A. C. suplied R-L circuit. What would be the supply voltage

Answer 1

For an LR circuit

V = √[ V²(r) + V²(l) ]. where V(r) is potential

across resistor and V(l) across inductor

V = √[ 20² + 15²]

V = √625

V = 25 volt

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