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Physics EC


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
Created by: jwittenburg06