Resistance Questions/Main Ideas Main Notes materials give some _______________ to flow of charge •All exception: superconductors •1 have a high resistance to electron flow •___________ examples: have a low resistance •___________ examples Amount of resistance depends on 3 things: •______________ of wire •______________ wire (_______________________) •______________of Imagine a straw -- it’s easier to blow through when: ______________ • ______________ • Resistance Formula: ______________ (Ω = Ohm) R • ______________ of wire (___) • L cross sectional___________ of wire (___) A • ______________ depends (___) on material • ρ
Resistance Questions/Main Ideas Main Notes •All materials give some _______________ to flow of charge •1 exception: superconductors •___________ have a high resistance to electron flow examples: •___________ have a low resistance examples Amount of resistance depends on 3 things: •______________ •______________ of wire •______________of wire (_______________________) Imagine a straw -- it’s easier to blow through when: • ______________ • ______________ Resistance Formula: • R ______________ (Ω = Ohm) • L ______________ of wire (___) • A cross sectional___________ of wire (___) • ρ ______________ depends on material (___)