PHYS 1010 Chapter Notes - Chapter 23: Electric Potential, Direct Current
18 Oct 2016
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Document Summary
The difference in electric potential between two points, measured in volts. Charge flows from one end to the other as long as there is potential difference. To attain a sustained flow of charge in a conductor, some arrangement must be made to maintain a difference in potential. Charges flow through a circuit because of an applied voltage across the circuit. The property of a material that resists electric current. Resistance of a wire depends on its thickness, length, temperature, and conductivity. The current in a circuit varies in direct proportion to the potential difference or voltage across the circuit and inversely with the circuit"s resistance. A potential difference of 1 v across a resistance of 1 ohm produces a current of 1. Current ~ voltage = 2x current = 2x voltage. Electrically charged particles that repeatedly reverse direction. Amount of energy per unit of time. Any path along which electrons can flow. No gaps = continuous flow of electrons.
