一块相对介电常数为εr的介质处于电场分布为E(r)电场中，设介质表面法线方程的单位向量为n 一半径为R的导体球所带电量Q,球外电介质的相对介电常数为εr...
\u4e00\u5bfc\u4f53\u7403\u5916\u5145\u6ee1\u76f8\u5bf9\u4ecb\u7535\u5e38\u91cf\u4e3a\u03b5r\u7684\u5747\u5300\u7535\u4ecb\u8d28\uff0c\u82e5\u6d4b\u5f97\u5bfc\u4f53\u8868\u9762\u9644\u8fd1\u573a\u5f3a\u4e3aE\uff0c\u5219\u5bfc\u4f53\u7403\u9762\u4e0a\u7684\u81ea\u7531\u7535\u8377\u5bc6\u4e0d\u4fdd\u8bc1\u6b63\u786e\uff0c\u4ec5\u4f9b\u53c2\u8003\uff0c\u8ba4\u4e3a\u6709\u9053\u7406\u518d\u91c7\u7eb3\u3002
\u7531\u9ad8\u65af\u5b9a\u7406\u77e5\uff0cES=Q/\u03b50\u03b5r\uff0c\u5f0f\u4e2dS\u8868\u793a\u7403\u7684\u8868\u9762\u79ef\uff0cQ \u662f\u603b\u5e26\u7535\u91cf\u3002
\u03b4=Q/S=\u03b50\u03b5rE
D=\u03b5r*\u03b50*E=Q/\uff084*\u03c0*R2\uff09
\u5bfc\u4f53\u4e2d\uff08\u5305\u62ec\u8868\u9762\uff09\u6ca1\u6709\u7535\u8377\u5b9a\u5411\u79fb\u52a8\u7684\u72b6\u6001\u53eb\u505a\u9759\u7535\u5e73\u8861\u72b6\u6001\u3002\u201c\u9759\u7535\u5e73\u8861\u201d\u6307\u7684\u662f\u5bfc\u4f53\u4e2d\u7684\u81ea\u7531\u7535\u8377\u6240\u53d7\u7684\u529b\u8fbe\u5230\u5e73\u8861\u800c\u4e0d\u518d\u505a\u5b9a\u5411\u8fd0\u52a8\u7684\u72b6\u6001\u3002
\u5bf9\u4e8e\u7535\u8377\u90fd\u5206\u5e03\u5728\u8868\u9762 \u53ef\u7528\u9ad8\u65af\u5b9a\u7406\u8bc1\u7684 \uff08\u5bfc\u4f53\u5185\u90e8\u7535\u573a\u5904\u5904\u4e3a0\uff09
电荷分布σ=P·n=ε0χeE(r)=ε0(εr-1)E(r);
希望您能满意
绛旓細鐩稿浠嬬數甯告暟蔚r鍙互鐢ㄩ潤鐢靛満鐢ㄥ涓嬫柟寮忔祴閲忥細棣栧厛鍦ㄤ袱鍧楁瀬鏉夸箣闂翠负鐪熺┖鐨勬椂鍊欐祴璇曠數瀹瑰櫒鐨勭數瀹笴0銆傜劧鍚庯紝鐢ㄥ悓鏍风殑鐢靛鏋佹澘闂磋窛绂讳絾鍦ㄦ瀬鏉块棿鍔犲叆鐢典粙璐鍚庢祴寰楃數瀹笴x銆傜劧鍚庣浉瀵逛粙鐢靛父鏁板彲浠ョ敤涓嬪紡璁＄畻锛毼祌=Cx/C0 鍦ㄦ爣鍑嗗ぇ姘斿帇涓嬶紝涓嶅惈浜屾哀鍖栫⒊鐨勫共鐕ョ┖姘旂殑鐩稿鐢靛鐜囄祌=1.00053銆傚洜姝わ紝鐢ㄨ繖绉嶇數鏋佹瀯...
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绛旓細瀵间綋涓婄數鍔垮澶勭浉绛夛紝鐢盪=E*d,d鐩稿悓锛屾墍浠ョ┖姘斿拰浠嬭川E鐩哥瓑銆傜敱D=蔚*E,D涓嶇浉绛夈傛瀬绔湴锛屽皢鐢佃В璐ㄥ厖婊＄數瀹瑰櫒锛岀數鍔垮樊鑲畾鏀瑰彉锛圗鏀瑰彉锛夛紝鎵浠ョ數鍔垮樊鏀瑰彉銆傛垨鑰呯敱闈㈠瘑搴﹀垎鏋愶紝璁惧乏鍙(鐢佃В璐紝绌烘皵锛変袱绔嚜鐢辩數鑽烽噺鍒嗗埆涓簈1,q2.鍘熺數鑽烽噺q涓嶅彉锛屽彲浠ョ敤鏃犻檺澶ф澘鍒嗘瀽q1=蔚r*q2锛宷1+q2=q.瑙ｆ柟绋嬪緱鍒伴潰...
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