Direct current - It moves from negative to positive, Alternating current - It is when the polarity switches back and forth between positive and negative, Hertz - It measures the speed at which polarity changes, Rectification - It is a process where AC can be switched to DC using a transformer or diode, Capacitance - It is the ability to store a quantity of electricity in an electric field., Inductance - It is the ability to store electricity in a magnetic field., Reactance - It is the impact of capacitors and inductors on an alternating current, Impedance - It is a way of assessing how easily electricity passes through an electrical device.,

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