PHYS1171 Lecture Notes - Lecture 11: Electrical Network, Electromotive Force, Resistor
Document Summary
In an electrical circuit, a source of energy is required to move charges: provided by a battery, or other power supply, the difference in electric potential between the two terminals of the battery is the. Electromotive force (emf) which pushes charges through the circuit. If we create a simple circuit by connecting a resistor with wire to the terminals of a battery, we see that a closed loop is formed: electric current will flow around the loop as charge carriers (electrons) move. In a circuit with multiple loops, the point where loops come together: junction. The dissipation of energy in some components of a circuit can be witnessed by the component heating up. Quiz: for a charge moving around the closed loop of a circuit, all the energy increases and decreases it experiences cancel each other out. If two resistors are added together in parallel, the total resistance is higher.
