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Page 1: Electricity outline

Electricity OutlineDefinitionsNeutron proton electron static electricityInduction JJ Thompson Rutherford insulatorsConductors triboelectric series conservation of chargeGrounding electrical discharge Electric Current ResistanceVoltage Battery superconductor Fuel CellAmpere Multimeter Current electrical energyResistors Alternating current Direct current Circuit Power potential difference potential energy kinetic energyGravitational force electrical force Coulomb conventional currentTransformation Volta Joule NewtonWork James Watt James Prescott Joule efficiencyGeorg Simon Ohm semi conductor

Know

Facts about your scientist that you studied and presented Explanation on static electricity experiments The strength of electric force from the static electricity is dependent on… The neutral/positive things are attracted to the negative things (electrons) and the negative

things are repelled away from the negatives. A material can be static electrically charged three different ways;

 - by Friction - by Contact

  - by Induction Measuring Charge - Coulombs Measuring Current – I=C/t (current is measured in amperes) Difference in DC and AC current Measuring electrical energy – V = E/C Charge (C) - Measured by counting: Coulombs Current (I)- Measured by rate of flowing charges: Ampere Voltage (V) - Measured by potential energy the charge has: Volt Measuring power – P = E/t or P=V/t The unit of power is: W (watts) The unit of energy is: J (joules) The unit of voltage is: V (volts) The unit of time is: s (seconds) How can power be increased? Power = Current x voltage P=IV Efficiency = output/input Ohm’s Law – R = V/I Factors of resistance Symbols of a circuit How to hook up a voltmeter and ammeter Circuit Diagrams Series and Parallel circuits – measure current, voltage and resistance (V=IR)


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