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به هم بستن مقاومت ها در حالت سری

تاریخ:چهارشنبه 25 دی 1392-11:51

مقاومتها یا سری بسته می‎شوند یا موازی

 در حالت سری
از همه مقاومتها جریان یكسانی می‎گذرد.

 

                           Iكل= I1=I2=I3

 كل اختلاف پتانسیل V=V1+V2+V3

                  Rكل Iكل =R1I1+R2I2+ R3I3

                 مقاومت كل R=R1+R2+R3

به R مقاومت كل یا مقاومت معادل گویند.
نكته: اگر چند مقاومت مشابه داشته باشیم در حالت سری R=n R1 كل

كه n تعداد مقا ومتها می باشد . مقاومت معادل از مقاومتهای مشابه بزرگتر است.




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