Resistance: Conduction in Different Materials 2

Description

This note covers the conductivity of different materials, such as metals, ionic solutions, gases and vacuums. It is best used in conjunction with the mind map on resistance, and the corresponding note on conduction in different materials.
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Resource summary

Question Answer
Charge carriers in metallic conductors Electrons
Factors affecting resistance of metallic conductors Resistivity, length, cross-sectional area, temperature
Charge carriers in ionic solutions Ions
Factor determining conductivity of an ionic solution Concentration
Voltameter Electrolyte, anode, cathode and the container that they are in
Charge carriers in gases Electrons
Examples of gas discharge tubes Neon lamps and street lights
Charge carriers in a vacuum Electrons
Cathode ray tube A vacuum in a tube with electrodes at either end
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