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# Physics EC

### Test

Question | Answer |
---|---|

Ohm's Law Voltage | currrent X resistance or V=R |

Electrical Power | current x voltage or P= IV |

Amp | coulomb of charge per sec |

volt | joules of energy for every coulomb of charge |

series | direct |

parallel | inverse |

Series circuit equals | 1 loop |

parallel circuit is how many loops | more than one loop |

Rtotal= | R1+R2+R3= |

closed circuit | is one in which charges are flowing |

open circuit | one that has an intentional break in the loop usually a switch |

short circuit | low resistance path that may bypass elements in a circuit and allow huge amounts of charge to flow in the circuit (dangerous) |

Current in Amperes | is defined as the number of charges (in Coulombs) flowing past a point each second |

Junction Rule(conservation of charge) | sum of currents entering the junction must equal the sum of the currents leaving the junction |

Charge energy model | each charge carries energy |

Voltage | defined as the number of joules of energy for each coulomb of charge |

Charge Transfer energy to obstacles | when charges pass through obstacles (resistance) in a circuit, they transfer some of their energy to the obstacle, causing it to heat up or light |

Increasing the energy per charge increases ??? | the flow of charge: current is proportional to voltage |

Electrical Potential Energy | Change of EPE=#of charges x Change energy per charge |

Loop Rule | the energy per charge of the battery equals the sum of the changes in energy per charge around a circuit loop (conservation of energy) |

power | amount of energy transferred each second: Power (in watts)=voltage x current |