Timeline for Why does inductor current lag the applied voltage at its terminal by 90 degrees?
Current License: CC BY-SA 4.0
4 events
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| Aug 11, 2019 at 2:52 | comment | added | VKJ | @alephzero Can I say that the EMF induced across the terminals of the inductor will cause current between the terminals of the inductor and thus this current continues to flow out of the inductor - the circuit?? | |
| Aug 11, 2019 at 1:32 | comment | added | alephzero | For an ideal inductor with zero resistance, the supplied voltage and induced EMF are equal and opposite. If you applied a constant voltage, the current would increase linearly for ever, to maintain a constant induced EMF. Of course this doesn't happen for a real power supply which can't produce an infinite current, or for a real inductor where the winding has some resistance. In that case the induced EMF is less than the supplied voltage, and the difference is given by Ohm's law using the internal resistance of the inductor. | |
| Aug 10, 2019 at 16:47 | comment | added | VKJ | In general It's said that induced EMF will be of same magnitude and opposite in direction in case of varying supply voltage.So the sum of supplied voltage and induced EMF won't be zero??? | |
| Aug 10, 2019 at 16:28 | history | answered | oleg | CC BY-SA 4.0 |