ELECTRICITY AND MAGNETISM G9 ALPHA and DELTA – 2011 Mr. ARNOLD, R

Electrochemical Cells Current is produced through a chemical reaction; An electrolyte interacts chemically with the electrodes, separating charges and producing a flow of electrons from the (-) to the (+) terminal.

Primary and Storage Cells Primary Cells – Wet Cells: The electrolyte is a liquid; – Dry Cells: The electrolyte is a solid paste

Primary and Storage Cells Storage Cells (aka secondary or rechargeable) – When current is being produced it is said the cell is being discharged; – When the engine is working, an alternator produces current and sends it back to the cell, recharging it.

Solar Cells (aka Photovoltaic cell) Materials such as silicon are able to absorb energy from the sun or other sources of light and the give off electrons, producing electric current.