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28 December, 15:48

A 0.143-Henry Inductor is connected in series with a variable resistor to a 208-volt 400-cycle source. For what value of capacitance will the current be (a) 1.04 ampere lagging and (b) 1.04 ampere leading?

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  1. 28 December, 16:17
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    A.) 359.2, B.) 2.5 uf

    Step-by-step explanation:

    E / I = R

    208 / 1.04 = 200 ohms

    2*pi*f*L = Xl

    6.28*400*.143 = 359.2 ohm

    1 / (2*pi*f*Xc) = c

    1 / (6.28*400*159.2) = 2.5 uf
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