1,Unit14,Resistor,CapacitorandInductor,电阻电容和电感,Resistor,CapacitorandInductor,Resistor,CapacitorandInductor,Ifabatteryisconnectedacrossaconductingmaterial,acertainamountofcurrentwillflowthroughthematerial.Thiscurrentisdependentonthevoltageofthebattery,onthedimensionsofthesample,andontheconductivityofthematerialitself.1TheoppositiontocurrentiscalledelectricalresistanceandisrepresentedbythelettersymbolR.Theunitofresistanceistheohm,atermthatisoftenexpressedbyusing.Oneohmisdefinedasthatamountofresi