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Direnç ve Güç

2016-08-20View Original

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Direnç çapı ve gücü nasıl anlaşılır
Reply #22016-08-20
Aynı malzemede, çap ne kadar büyükse direnç o kadar düşüktür. Elektrikli fırının teline bakılabilir; kalın olanların direnci düşük, gücü yüksektir.
Reply #32016-08-20
R=ρL/S (ρ, malzemenin yoğunluğudur; L, uzunluktur; S ise kesit alanıdır). S=π(D/2)² ve W=U²/R formüllerinden yararlanılarak güç W=U²πD²/4ρL olarak bulunur. Dolayısıyla D ne kadar büyükse, W de o kadar büyüktür

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