Voltage and Conservation laws?

Hilde Heskett: The law you used is conservation of energy. Voltage is a measure of the difference in potential energy per charge from one point in the circuit compared to another. As the voltage "drops" it is getting used up in pushing the charge through the circuit until it reaches the voltage source and drops all the way to zero. That is why in a series circuit the voltage drops are bigger across bigger resistors. The voltage re-energizes the charge for another go around the circuit. Conservation of charge would be used for analysis of current at different points in a circuit, because charge flow is current....Show more

Cassondra Vanholland: The sum of the voltages around a closed circuit is zero.This is the result of conservation of charge, but in thiscase just think as follows: battery voltage = 24V:so: 24v-6-6-x = 0 or x = 12 voltsor: 24v - i*r1 -i*r2 - i*r3 = 0where * means timesThe total charge "electrons" flowing per unit time, current, is constant.! Or, the total number of electrons flowing into a resistor must equal the number flowing out of that resistor....Show more