PHYS 2211 Lecture Notes - Lecture 10: Resistor, Ammeter, Voltmeter
Document Summary
Assume that positive charges leave the long end of the battery and return through the short end of the battery. The symbol for a resistor is a wire bent into many elbows so that charge flow is slightly hindered but not completely shut off. Recall from the last unit we studied charges at rest. In this unit the charges will move through a circuit. A circuit consists of at least one source of voltage difference a. k. a. a battery. The voltage difference will rapidly establish an electric field through the circuit. The electric field will enable charged particles to move along a closed path or loop. Although the electric field is established at near the speed of light the charged particles (electrons in reality) will move along at mm/sec. In this first lesson we consider a single battery connected to a single load. We will see how to draw the circuit and calculate four measurable values of a simple circuit.
