Positive SSL
    14.素養(4)
1 如圖所示之兩電感串聯電路,其中自感皆為0.02H,互感為0.01H,若直流電流I為10A,則此電路的總儲能為何? 103 統測
A 5焦耳
B 3焦耳
C 0.3焦耳
D 0.2焦耳

串聯互助:

LT=L1+L2+2M =0.02+0.02+2 × 0.01=0.06H

W = 12 LI2 = 12 × 0.06 × 102 = 3J