Resistance
"a measure of a material's ability to resist the flow of electric current ."
"a measure of a material's ability to resist the flow of electric current ."
Unit & Abbreviation:
Unit & Abbreviation:
R: 1 Ohm = 1 Volt / Ampere
Specific Resistance | Resistivity:
Specific Resistance | Resistivity:
Resistance of unit length and unit cross-sectional area of a material.
Use: Resistivity we use to compare the resistance of different materials. Like Silver is less resistive than Copper.
Example: Resistivity of Silver is 1.59*10^-8 ohm-m and Copper is 1.68*10^-9 ohm-m.
Unit & Abbreviation:
Unit & Abbreviation:
Series Resistance:
Series Resistance:
Series Key Idea: The current is the same in each resistor by the current law.
Parallel Resistance:
Parallel Resistance:
Parallel Key Idea: The voltage is the same across each resistor by the voltage law.
Voltage Divider:
Voltage Divider:
Series Key Idea: The current is the same in each resistor by the current law.
Questions:
Questions:
Related Topics:
Related Topics:
Resistance.