![]() The movement of charge is called an electric current. How many electrons pass through a circuit in 10 ms if the dc current is 2 A? Current is measured with an ammeter. Conventional current flow will be used throughout this course. AC or alternating current is current that changes direction cyclically, i. The voltage of a battery, its service life, and other characteristics depend on the material from which it is made.Īlkaline eleltrotechnika is one of the most widely used, general purpose primary cell available. Carbon-Zinc battery dry cell was the most popular. Sizes and voltage are the same as alkaline. Lithium battery features small size, low cost, and long shelf life. NiCads are the most popular rechargeable batteries. They have long service lives, operate over wide temperature ranges, and have many styles and sizes. Lead acid commonly found in automotive batteries. ![]() It is affected by discharge rates, operating schedules, elektrotechhika, and other factors. ![]() Life is shortened at low as well as at high temperatures.Ĭells are often put in parallel or in series to increase their current or voltage bolkoski.
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