Examlex
An online poll asked people what their main source of news was: newspapers,television,internet,or radio? There were 866 responses.Here are the results:
If we select a person at random from this sample of 912 people,what is the probability that the person responded "Internet" or "Radio"?
Cathode
An electrode through which electrons move outwards in a circuit; often associated with the reduction process in electrochemical reactions.
Electrolyte
A chemical compound that, when melted or dissolved in water or another solvent, dissociates into ions and becomes capable of conducting electricity.
Rectification
The process of converting alternating current (AC) to direct current (DC) using diodes or other rectifying devices.
Direct Current
Electrical current that flows only from zero to positive and does not alternate negative and positive as AC does; the type of current created by the use of a battery.
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