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116问答网 > 平行板电容器的两个极板A、B分别接在电压为60V的恒定电源上，两极板间距为3cm,电容器带电量为6*10-8 C ，

平行板电容器的两个极板A、B分别接在电压为60V的恒定电源上，两极板间距为3cm,电容器带电量为6*10-8 C ，

2025-03-15 15:51:04

推荐回答（3个）

回答1：

(1)c=Q/U=6*10-8/60=1*10^-9C
(2)E=U/d=60/0.03=2000N/m
(3)若A接电源正极，则UAC=φA-φC φC=φA-UAC=0-UAC=-Ed'=-2000*0.01=-20v
若B接电源正极，则UCA=φC-φCA φC=φA+UCA=0+UCA=E*d'=2000*0.01=20v

回答2：

1*10-9C/V 2000V/m -20V(A接正极算）

回答3：

(1),c=Q/U=(6*10-8)/60=1*10-9F
(2),E=U/d=60/0.03=2000N/C
(3),B点电势=Ed2=2000*0.02=40v

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