Can AC supply can be applied to DC coil?

Answer 1

If you apply a DC voltage to an inductor (AC or DC, it does not matter) the current through the inductor will increase with a rate proportional to voltage and inversely proportional to inductance. di/dt = V/L In the ideal case, current would continue to rise to infinity. Since there are no ideal voltage sources, inductors, or conductors, current would rise to the limit of the voltage source's current capacity or to the voltage divided by the resistance of the circuit, whichever comes first. Note that an inductor is essentially a short circuit to a DC voltage. You need series resistance in order for the circuit to remain stable.

Answer 2

Standard copper wires are not directional so either DC or AC can be carried over any wire. Wires are generally rated to carry a specified maximum current and that also applies for DC and AC currents.

There can be one minor difference between AC and DC current flowing through a wire and that is the skin effect. AC currents have a tendency to flow on the outside of a conductor rather than equally across the whole cross section. This is only an issue with very high frequencies in the order of megahertz. DC current will flow better in a conductor compared to a very high frequency AC current. At audio and mains frequencies, the skin effect is generally too small to be measured and far too small to have a significant effect.

Answer 3

Yes it can if the voltage is not excessive, but the coil would probably draw much less current and the magnetic field would most likely not be useable.

Answer 4

There is no difference except a diode is fitted to an ac relay coil so the coil only sees DC even on an ac supply albeit at 50 or 60 cycle per second

Answer 5

no In some cases yes but it requires additional expensive equipment. The equipment is called an inverter. See related links.

Answer 6

yes, ac or dc current it doesn't matter current is flowing through the coil(its also an conductor) so magnetic field around coil so flux exist