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How much current will flow at 208Vrms 60Hz through a 100mH inductor?
Wiki User
∙ 9y ago
The reactance is jwL or 2xpix60x0.1 = 37.7 ohms
The current with 208 v is 208/37.7 or 5.52 amps. This assumes that the inductor can take the current without saturating, because if it saturates the current might be higher and it might get quite hot.
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∙ 9y ago
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Assuming the question is about simple reactive control gear, e.g. a choke or inductor in series with the discharge lamp, then the following answer applies. In an ideal situation, an ideal inductor, that is an inductor exhibiting pure inductance by virtue of its construction and the use of wire with no resistance, then the losses would be zero and the power consumed by the circuit would be V.I.Cos Phi, where Phi is the phase angle between the voltage and current. In the real world electronic components are rarely ever perfect, and although a component may be called an inductor or choke, it will possess some parasitic resistance and possibly some stray capacitance too. The main source of the parasitic resistance is due to the resistance of the wire used to wind it, the diameter and length of the wire required to obtain a particular inductance and current rating and any eddy-current losses in an iron core if one is used. 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