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# OAT Physics

### Chapter 7 - Magnetism

Term | Definition |
---|---|

Magnetic fields are measured in | Tesla = E4 Gauss |

F | = qvB sin theta = mv^2/r |

If v and B are parallel | Force = 0 cuz sin 0 degrees = 0 |

If particle is negative, right hand rule | results are the opposite of the correct answer |

r | = mv/qB |

Current I | delta q/delta t in Ampere A; opposite of e- flow |

F (current) | = LIB |

B for straight wires | = mu I/2(pi)r |

B for circular loops | = mu I/2r |

Loop rule | fingers curl in direction of I and thumb = direction of B |