1.
(2022高二下·湖南月考)
在如圖所示的電路中,燈泡A1和A2的規(guī)格相同,L為自感系數(shù)較大的線圈,其直流電阻為RL。周同學(xué)先閉合開(kāi)關(guān)S,調(diào)節(jié)滑動(dòng)變阻器R、R1 , 使A1和A2都正常發(fā)光,然后斷開(kāi)開(kāi)關(guān)S。吳同學(xué)在周同學(xué)走后,接通該電路繼續(xù)實(shí)驗(yàn),就吳同學(xué)觀察的實(shí)驗(yàn)現(xiàn)象,下列說(shuō)法正確的是( )
A . 閉合開(kāi)關(guān)S后,燈泡A1、A2逐漸亮起來(lái)
B . 閉合開(kāi)關(guān)S后,燈泡A1逐漸亮起來(lái),燈泡A2立即亮起
C . 閉合開(kāi)關(guān)S待電路穩(wěn)定后斷開(kāi)開(kāi)關(guān)S,燈泡A1立即熄滅,燈泡A2逐漸熄滅
閉合開(kāi)關(guān)S待電路穩(wěn)定后斷開(kāi)開(kāi)關(guān)S,燈泡A1、A2逐漸熄滅