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Electricity

Electricity. Charge. w hether two charges attract or repel depends on whether they have the same or opposite sign unit of measurement for charge is the coulomb (C) one electron has a charge of 0.00000000000000000016 coulombs. current vs. voltage (5:20)

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Electricity

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Presentation Transcript

  1. Electricity

  2. Charge • whether two charges attract or repel depends on whether they have the same or opposite sign • unit of measurement for charge is the coulomb (C) • one electron has a charge of 0.00000000000000000016 coulombs

  3. current vs. voltage(5:20) • http://www.youtube.com/watch?v=1xPjES-sHwg

  4. Current • comes from the motion of electrons • is the rate at which electrons flow past a point on a circuit • measured in units called amperes, or amps (A) current

  5. Voltage • a measure of electric potential energy • voltage is an electrical force • measured in volts (V) • adifference in voltage provides the energy that causes current to flow

  6. Circuits • current only flows when there is a complete and unbroken path, or a closed circuit

  7. Electricity and Circuits (8:35) • http://www.youtube.com/watch?v=D2monVkCkX4&feature=related

  8. series circuit • current can only take one path, so the current is the same at all points in the circuit

  9. parallel circuit • the current can take more than one path • each branch works independently

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