Unformatted text preview: The current density ~ J in a resistor depends on the local electric field ~ E and on the resistivity ρ of the resistor material. • Resistivity: ρ = E J » 1V / m 1A / m 2 = 1Ωm – • Conductivity: σ = 1 ρ [1(Ωm)-1 ] • Vector relations: ~ E = ρ ~ J, ~ J = σ ~ E tsl134 – p.1/1...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.
- Spring '07