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Electricity

Electricity. Electric Current. The net movement of electric charges in a single direction Electrons in a material (metal wire) are in constant motion in all directions = No Net Movement of electrons in one direction In an electric current the electrons drift in the direction of the flow.

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Electricity

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  1. Electricity

  2. Electric Current • The net movement of electric charges in a single direction • Electrons in a material (metal wire) are in constant motion in all directions = No Net Movement of electrons in one direction • In an electric current the electrons drift in the direction of the flow

  3. Electric Current • Measured in Amperes • 1 Ampere = 6,250 million electrons flowing past a point every second

  4. Voltage Difference • Electric Charge flows from higher voltage to lower voltage • Measured in Volts

  5. Resistance • The tendency for a material to oppose the flow of electrons • Changes electrical energy into thermal energy or light • Measured in Ohms (Ω)

  6. Ohm’s Law I  Current (amperes) V  Voltage Difference (volts) R  Resistance (ohms) (89-90)

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