A magnetic field results whenever a current flows through a conductor.

More Questions from Inductors

• Increasing the inductance value in an ac inductive circuit will lower the circuit current.
• A magnet consisting of a coil of wire wound around a soft iron or steel core is called an electromagnet.
• An ideal inductor would not dissipate any energy.
• All the schematic symbols shown in the given figure are variable inductors.
• A step-up transformer will have a turns ratio greater than 1.
• The quality factor of an inductor is the ratio of inductive reactance to the winding resistance of the coil.
• An inductor will boost current flow.
• The amount of dc current that an inductor will allow to pass depends on the circuit's total resistance that is in series with it.
• A transformer can be designed to step up or step down dc voltage.
• The current through an inductor in a parallel RL circuit leads the current through the resistor.

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