Chapter 10 Power Supplies Measuring Electricity Voltage—pressure of electrons in a wire Unit of measurement: volts (V) Current— flow (or amount) of electrons in a wire -Unit: ampere (A) -When voltage is applied to a wire, electrons flow, producing current Wattage—measure of power consumed or needed watt (W) W = V * A Resistance—impedance or opposition to the flow ohm (Ω) Wire has amperage rating Defines how much amperage it can handle i.e., 20 amp, 30 amp If you exceed amperage Wires…
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