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    14.素養(4)
1 如圖所示，a、b 兩端的電壓為 𝒱ab ( t ) ，則下列敘述何者正確？ 105 統測
A 𝒱ab ( 2)=2.5mV
B 𝒱ab ( 6 )=0mV
C 𝒱ab ( 7 )=5mV
D 𝒱ab ( 9)=2.5mV
  

e = L △i△t

𝒱ab (2) = 1m 2.5-02-0 =1.25mV

𝒱ab (6) = 1m 5-56-4 =0mV

𝒱ab (7) = 1m 5-57-4 =0mV

𝒱ab ( 9) = 1m 2.5-59-8 =-2.5mV