发布网友 发布时间:2024-03-29 12:04
共2个回答
热心网友 时间:2024-10-22 08:48
1)P2:P2‘=I1�0�5R2:I2�0�5R2=I1�0�5:I2�0�5=1:4I1:I2=1:2I2=2I1=2×1A=2A2)I1�0�5R1=P1(1A)�0�5×R1=4WR1=4ΩUr1=I1R1=1A×4Ω=4VUr1‘=I2R1=2A×4Ω=8VU1:U2=(U-Ur1):(U-Ur1')=(U-4V):(U-8V)=2:1U-4V=2U-16VU=12V3)U2=(U-Ur1‘)=12V-8V=4VQ2=U2I2t=4V×2A×300s=2400J热心网友 时间:2024-10-22 08:53
为什么我看不到你说的图?