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10-RLC krugovi.pdf

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Gustoća energije u magnetskom polju zavojnice2LIEL= Energija magnetskog polja zavojnice.2Ubacimo izraze za koeficijent samoindukcije i izraz za struju iz mag.polja zavojnice.LE= µL=02N Sµ0l2N SlIB = µ0N l⎛ Bl⎜⎝ µ0N2⎞⎟⎠2IEL==Blµ N012µGustoća energije je energija/volumen 02B Slw=ELSlE =LLI2w2=12µ0Sl2B Slw=2B2µ0Vrijedi općenito za bilo koje mag. poljeu prostoru!

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