资料介绍
电磁感应2q
° q ° q qq§Pq¤q° kw (Faraday’s Law) k P w(Faraday’s Law of Induction)
E =
dΦ B d = ∫ B dA dt dt
emf)
E: Pq°(induced
ΦB: qq(magnetic flux) “-”: §Nw (Lenz’s Law) The polarity of the induced emf is such that it tens to produce a current that creates a magnetic flux to oppose the change in magnetic flux through the area enclosed by the current loop.
¤¤¤jz¨t ]¤Z
qP¤G -1
q §Nw
±aqy°éb§¤¤¤±§
E =
dΦ B d = ( BA cos θ) dt dt
BH§
″≤∞Π≥≠θ °∏≡κ
-±nH§ ¨¤×θΗ→
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