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AP Physics Chapter 18 Electric Current

AP Physics Chapter 18 Electric Current. Alessandro Volta (1745-1827) invented the electric battery. An electric cell is composed of 1 anode and 1 cathode…a battery is a battery of these cells. An electrolyte is the solution in a cell. The electrode is the metal of the electrode.

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AP Physics Chapter 18 Electric Current

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  1. AP Physics Chapter 18Electric Current Alessandro Volta (1745-1827) invented the electric battery. An electric cell is composed of 1 anode and 1 cathode…a battery is a battery of these cells. An electrolyte is the solution in a cell. The electrode is the metal of the electrode. See electric cell and be able to build/sketch all parts.

  2. 18-2 Electric Current • Current (I) is the rate of flow of electrons in a conductor. • I= DQ/ Dt • See circuit symbols…be able to translate/draw a symbol. • See Example 18-1 p531.

  3. 18-3 Ohm’s Law: Resistance and Resistors • Simon Ohm (1787-1854) established experimentally that the current in a metal wire is proportional to voltage. • Ohm’s law states V=IR or that current in a conductor is proportional to the voltage, in metal conductors. (See p533) • Some materials are non-ohmic. • See Example 18-3 p 533.

  4. HOMEWORK 18a P 551 • PR#1-10 & 11-14

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