PHYS 1502Q Chapter Notes - Chapter 9: Electric Current, Number Density, Current Density
Document Summary
Outermost electrons are able to move freely. Electrons move with a speed depending on the temperature. Average velocity: 0 (they move randomly) m s. Net electric field in the wire created due to constant source of electric potential from the battery. Creates force on electrons which leads to nonzero velocity of the conduction electrons which results in electric current vdrift flows in opposite direction of electric current. J = i ev ne = n a. Molar mass (specific to each material) vdrift = n ee. = conductivity is large for good conductors is small for good insulators. V equivalent = v 1 + v 2. Requivalent = r1 + r2 = a. Iequivalent = i1 + i2 = v. V equivalent = v 1 = v 2. Relationship between equivalent resistors in parallel/series is opposite of capacitors. Battery supplies the energy that the resistor dissipates du = i.
