विद्युत धारा
(aangrezi:Electric Current) avesh ke pravah ko vidyut dhara kahate haian. thos chalakoan mean avesh ka pravah ilektr aaunoan ke ek sthan se doosare sthan tak sthanantaran ke karan hota hai, jabaki dravoan jaise- amloan, ksharoan v lavanoan ke jaliy vilayanoan tatha gaisoan mean yah pravah ayanoan ki gati ke karan hota hai. sadharanah vidyut dhara ki disha dhan avesh ke gati ki disha ki or tatha rrin avesh ke gati ki viparit disha mean mani jati hai. thos chalakoan mean vidyut dhara ki disha, ilektr aaunoan ke pravah ki disha ke viparit mani jati hai. es. aee. paddhati mean vidyut dhara ka matrak empiyar hota hai. yadi nirvath mean sthit do sidhe, lambe v samantar taroan mean, jinake bich ki doori. mitar hai aur ek hi vidyut dhara pravahit karane par taroan ke bich unaki prati mitar lambaee mean 2 x 10-7 nyootan ka bal utpann ho to taroan mean pravahit dhara 1 empiyar hoti hai. kisi chalak tar se yadi 1 empiyar vidyut dhara pravahit ho rahi hai to isak arth yah hai ki us chalak tar mean ek sekend mean 6.25 x 1018 ilektr aaun ek sire se pravesh karate haian tatha itane hi ilektr aaun ek sekend mean doosare sire se nikal jate haian. yadi kisi paripath mean dhara ek hi disha mean bahati hai to use disht dhara kahate haian tatha yadi dhara ki disha lagatar badalati rahati hai to use 'pratyavarti dhara' kahate haian.
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tika tippani aur sandarbh
sanbandhit lekh
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varnamala kramanusar lekh khoj
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