# Terms & Objectives    ## The Standards that Relate to Chapter 34 - Electric Current are:

• The Properties of Matter
• P.1.4 Employ correct units in describing common physical quantities.
• The Nature of Electricity & Magnetism
• P.1.18 Explain the concepts of ... electric current, electric potential, electric field ... Use the definitions of .... the ampere, the volt...
• P.1.19 Analyze simple arrangements of electrical components in series and parallel circuits. Know that any resistive element in a DC circuit dissipates energy, which heats the resistor.

## Objectives:

When you finish your study of electric circuits you should be able to:

Note: The number in parentheses is a (chapter:section) in the text.
• Circuits
1. define "electric circuit." (35.1)
2. distinguish between a series, parallel, and compound circuits.(35.2)
3. Recognize the common electrical symbols for a battery, a meter, a switch, a ground, and a resistance. (35.5)
• Series Circuits:
1. state that a series circuit provides a single conducting path for charges.(35.1)
2. state what happens to other devices in a series circuit when one device fails.(35.3)
3. state that the current must be the same in all parts of a series circuit. (35.3)
4. state that the total voltage in a series circuit is the sum of the voltages across the separate components. (35.3)
5. calculate the equivalent (total) resistance in a series circuit as the sum of the individual resistances. (35.3)
6. apply Ohm's Law to a series circuit. (35.3)
• Parallel Circuits:
1. state that the voltage is the same across each device in a parallel circuit. (35.4)
2. state what happens to other devices in a parallel circuit when one device fails.(35.4)
3. apply Ohm's Law separately to each branch of a parallel circuit.(35.4)
4. calculate the total current as the sum of the branch currents. (35.4)
• Resistance
1. state that the equivalent (total) resistance of a parallel circuit decreases as the number of branches increases.(35.7)
2. calculate the equivalent (total) resistance of two equal resistances connected in parallel. (35.6)
3. estimate the equivalent (total) resistance of two unequal resistances connected in parallel.(35.6)    