試題詳解

13. According to Lenz's law, when changing the magnetic flux throu^i a coil, the direction of the induced current in a coil is such lhatit...
(A) opposes the change in magnetic flux.
(B) supports the change in m^netic flux.
(C) depends on the resistance of the coil.
(D) is unrelated to the magnetic flux. 也)aligns with the magnetic flux.