Chapter 6.2: Resistance
True or False: most conductors have lower resistance at higher temperatures.
False; most have greater resistance at higher temperatures
The cross-sectional area of a resistor and resistance share a (direct, inverse) relationship, meaning that as the length of the resistor increases, the resistance (increases, decreases).
inverse; decreases
The SI unit for resistivity is ______.
ohms/meter
What equation is used to find the resistance of a resistor when given the resistor's resistivity, length, and cross-sectional area?
ρ= resistivity L= length A= cross-sectional area
What are the four characteristics of resistors that affect resistance?
1. Resistivity 2. Length 3. Cross-sectional area 4. Temperature
The length of a resistor and resistance share a (direct, inverse) relationship, meaning that as the length of the resistor increases, the resistance (increases, decreases).
Direct; increases
When increasing the cross-section area in a resistor, the number of pathways through the resistor increases, and there pathways are called ______.
conduction pathways