理想变压器原、副线圈匝数比为20:1,两个分别标有“12V,6W”、“12V,12W”的小灯泡并联在副线圈的两端,当两灯泡都正常工作时,原线圈电路中电压表和电流表(可视为理想的)的示数分别是( )
A.120V,0.10A | B.240V,0.025A |
C.120V,0.05A | D.240V,0.075A |
相关知识点
理想变压器原、副线圈匝数比为20:1,两个分别标有“12V,6W”、“12V,12W”的小灯泡并联在副线圈的两端,当两灯泡都正常工作时,原线圈电路中电压表和电流表(可视为理想的)的示数分别是( )
A.120V,0.10A | B.240V,0.025A |
C.120V,0.05A | D.240V,0.075A |
试题篮
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