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* The foundation of understanding electric circuits is Ohm's law. | * The foundation of understanding electric circuits is Ohm's law. | ||
[http:// | [http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+43%0Ar+-240+-48+-64+-48+0+1000%0Av+-240+32+-240+-48+0+0+40+5+0+0+0.5%0A370+-64+-48+-64+32+1+0%0Ax+1+34+255+37+4+18+I%5Cs%5Cq%5CsU%5Cs/%5CsR%5Cs%5Cq%5Cs5%5CsV%5Cs/%5Cs1%5CskOhm%5Cs%5Cq%5Cs5%5CsmA%0Ax+-311+-88+330+-85+4+18+This%5Csshows%5Cshow%5Csto%5Cscalculate%5Cstha%5Cscurrent%5Csrunning%5Csthrough%5Csa%5Csresistor%5Csby%5CsOhm's%5Cslaw.%0Ax+-315+101+243+104+4+12+The%5Csvoltage%5Cssource%5Cson%5Csthe%5Csleft%5Cshas%5Cs5V,%5Cswhich%5Csforce%5Csa%5Cscurrent%5Csto%5Csrun%5Csthrough%5Csthe%5Csresistor%5Cswith%5Cs1000%5CsOhms.%0Ax+-317+127+114+130+4+12+%5CsThe%5Csresistor%5Cslimits%5Csthe%5Cscurrent%5Csto%5Cs5%5CsmA%5Cs(milli-Ampleres)%5Csaccording%5Csto%5CsOhm's%5Cslaw.%0Ax+-1+-6+67+-3+4+18+U%5Cs%5Cq%5CsR%5Cs*%5CsI%0Aw+-240+32+-240+48+0%0Aw+-240+48+-64+48+0%0Aw+-64+48+-64+32+0%0Ap+-304+-48+-304+48+1+0%0Aw+-304+48+-240+48+0%0Aw+-304+-48+-240+-48+0%0Ax+-310+-138+-227+-135+4+18+Ohm's%5Cslaw%0Ao+2+64+0+4099+0.0000762939453125+0.00625+0+2+2+3%0A Ohm's Law] | ||
* We can calculate series and parallel resistances with Ohm's law: | * We can calculate series and parallel resistances with Ohm's law: | ||
[http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+45.7144713268909+50+5+43%0Ax+-483+108+-368+111+4+16+R_tot%5Cs%5Cq%5CsR1%5Cs%5Cp%5CsR2%0Ax+-469+-262+-224+-259+4+18+Series%5Csand%5CsParallel%5CsResistance%0Ax+-483+57+-330+60+4+12+Series%5CsResistances%5Csadd%5Csup!%0Ax+-501+-140+-485+-137+4+12+R1%0Ax+-500+-53+-484+-50+4+12+R2%0Ar+-464+-96+-464+16+0+1000%0Ar+-464+-192+-464+-96+0+1000%0A216+-400+16+-400+-192+0+0.01%0Aw+-400+-192+-464+-192+0%0Aw+-464+16+-400+16+0%0Aw+-96+16+-16+16+0%0Aw+-16+-192+-96+-192+0%0A216+64+16+64+-192+0+0.01%0Ar+-176+-192+-176+16+0+1000%0Ar+-96+-192+-96+16+0+1000%0Ax+-134+-84+-118+-81+4+12+R2%0Ax+-216+-86+-200+-83+4+12+R1%0Ax+-181+55+48+58+4+12+Parallel%5CsResistances%5Cshave%5Csan%5Csinverse%5Cslaw:%0Ax+-177+104+132+107+4+16+1%5Cs/%5CsR_tot%5Cs%5Cq%5Cs1/R1%5Cs%5Cp%5Cs1/R2%5Cs%5Cp%5Cs1/R3%5Cs%5Cp%5Cs...%5Cs%5Cp%5Cs1/R_n%0Aw+-176+-192+-96+-192+0%0Aw+-176+16+-96+16+0%0Ar+-16+-192+-16+16+0+1000%0Aw+-16+-192+64+-192+0%0Aw+-16+16+64+16+0%0Ax+-50+-84+-34+-81+4+12+R2%0A series and parallel resistances] | [http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+45.7144713268909+50+5+43%0Ax+-483+108+-368+111+4+16+R_tot%5Cs%5Cq%5CsR1%5Cs%5Cp%5CsR2%0Ax+-469+-262+-224+-259+4+18+Series%5Csand%5CsParallel%5CsResistance%0Ax+-483+57+-330+60+4+12+Series%5CsResistances%5Csadd%5Csup!%0Ax+-501+-140+-485+-137+4+12+R1%0Ax+-500+-53+-484+-50+4+12+R2%0Ar+-464+-96+-464+16+0+1000%0Ar+-464+-192+-464+-96+0+1000%0A216+-400+16+-400+-192+0+0.01%0Aw+-400+-192+-464+-192+0%0Aw+-464+16+-400+16+0%0Aw+-96+16+-16+16+0%0Aw+-16+-192+-96+-192+0%0A216+64+16+64+-192+0+0.01%0Ar+-176+-192+-176+16+0+1000%0Ar+-96+-192+-96+16+0+1000%0Ax+-134+-84+-118+-81+4+12+R2%0Ax+-216+-86+-200+-83+4+12+R1%0Ax+-181+55+48+58+4+12+Parallel%5CsResistances%5Cshave%5Csan%5Csinverse%5Cslaw:%0Ax+-177+104+132+107+4+16+1%5Cs/%5CsR_tot%5Cs%5Cq%5Cs1/R1%5Cs%5Cp%5Cs1/R2%5Cs%5Cp%5Cs1/R3%5Cs%5Cp%5Cs...%5Cs%5Cp%5Cs1/R_n%0Aw+-176+-192+-96+-192+0%0Aw+-176+16+-96+16+0%0Ar+-16+-192+-16+16+0+1000%0Aw+-16+-192+64+-192+0%0Aw+-16+16+64+16+0%0Ax+-50+-84+-34+-81+4+12+R2%0A series and parallel resistances] |