Iona Physics



Electricity Review

|Variable |Symbol |Definition |Units |

|Charge |q | |Coulomb |

|Energy or work |W |W = f*d |Joule |

|Potential Difference or |V |V=W/q |Volt = Joule/Coulomb |

|Voltage | | | |

|Current |I |I = q/t |Amp = Coul/sec |

|Resistance |R |R=V/I |Ohm = Volt/Amp |

|Power |P |P = VI |Watt = Volt*Amp |

|Energy or work |W |W = Pt |Joule = Watt*sec |

1 elementary charge = 1.6 x10 -19 Coulomb

1 Coulomb = 6.25 x10 18 Elementary charges

Coulomb’s law

Electric Field

Series Circuits (only one path)

Parallel Circuit (more than one path)

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