已知电阻电路如图所示，R1＝R2＝R3＝R4＝R5＝R6＝1Ω，分别求AB端和CB端等效电阻 如图电路中，R1＝R4＝4Ω，R2＝R3＝R5＝R6＝2Ω，...
\u5df2\u77e5\u7535\u8def\u5982\u56fe\u6240\u793a\uff0cR1\uff1dR5\uff1dR6\uff1d40\u03a9\uff0cR2\uff1dR3\uff1dR4\uff1d30\u03a9\uff0c\u8bd5\u6c42ab\u7aef\u5165\u7aef\u7535\u963b\u5148\u8fdb\u884c\u25b3-Y\u53d8\u6362\u3002
\u8bbeA\u4e3a\u6b63 B\u4e3a\u8d1f
\u7535\u952e\u65ad\u5f00\u65f6 \u5148\u5230R1
\u518d\u5230R3\u548cR2 \u8fd9\u4e24\u4e2a\u6574\u4f53\u548cR6\u5e76
\u518d\u52304\u548c5 \u6c42\u7b49\u6548\u7535\u963b\u6240\u6709\u95ee\u9898\u5f97\u89e3
\u95ed\u5408\u65f6 \u8d701\u548c6
2，1并得2/3
2/3，1串得5/3
5/3,1并得：(5/3)/(1+5/3)=5/8
5/8，1串得：13/8
所以RAB=13/8欧
忽略小数AB=0.6欧姆。CB=1.6欧姆
绛旓細5/8锛1涓插緱锛13/8 鎵浠AB=13/8娆
绛旓細鍙橀樆鍣ㄦ帴鍏鐢佃矾鐨鐢甸樆鍙樺皬锛庡洜澶鐢佃矾鐢甸樆濮嬬粓澶т簬鐢垫簮鍐呯數闃伙紝鏁呯數婧愮殑杈撳嚭鍔熺巼涓嶆柇澧炲ぇ锛屾晠A姝ｇ‘锛汢銆佺數婧愮殑鏁堢巼涓 畏=UIEI=R1+R2R1+R2+r锛孯2鍑忓皬锛屽垯鐢垫簮鐨勬晥鐜囦笉鏂噺灏忥紝鏁匓姝ｇ‘锛嶤銆佸湪婊戝姩鍙橀樆鍣ㄧ殑婊戣噦P鐢盿婊戝埌b鐨勮繃绋嬩腑锛
绛旓細锛1锛塖鏂紑鏃讹紝R3銆丷4涓茶仈鍚庝笌R2骞惰仈锛屽啀涓嶳1涓茶仈锛庣敾鍑虹瓑鏁鐢佃矾濡傚浘鎵绀锛庡鐢佃矾鐢甸樆鍊糝=R1+R2(R3+R4)R2+R3+R4=2+1脳45锛埼╋級=2.8惟锛庯紙2锛塖闂悎鏃锛孯1銆丷3骞惰仈鐢甸樆鍊间负R骞=R1R3R1+R3=1惟澶栫數璺數闃诲糝鈥=(R骞+R2)R4R骞+R2+R4=1惟锛3锛夌敱闂悎鐢佃矾娆у瀹氬緥寰楋細 E=U1+U1...
绛旓細1銆佸幓鎺夊浣欑殑鐢甸樆銆傦紙 琚柇璺垨鐭矾鐨勭數闃诲潎鏄浣欑殑锛2銆佺粰姣忎釜鑺傜偣璧峰瓧姣嶅悕锛堢浉鍚岀殑鑺傜偣瑕佽捣鍚屼竴涓瓧姣嶅悕锛夈3銆佷粠a鐐瑰嚭鍙戯紝鎵鏈夌數闃诲叏閮ㄦ墦妯帓鍒楁暣鐞嗘潵鐢诲浘锛堟垨鍏ㄩ儴鎵撶珫鏁寸悊锛夛紝涓鐩存暣鐞嗚嚦b 鐐广傜煭璺垽鏂柟娉曪細鍚屼竴鏀矾鐨勫ご灏句袱绔涓鏍瑰绾胯繛鎺ヨ捣鏉ャ傛敮璺細鍗充覆鑱旂殑鐢佃矾锛娴佽繃鐨勭數娴佺浉绛夈傛巿浜...
绛旓細涓轰簡绠鍖鐢佃矾锛屽惂鐢靛帇琛ㄧ湅鍋氭柇璺紝鐢垫祦琛ㄧ湅鍋氱煭璺 鍒檙2,r3,r4骞惰仈鍚庝笌r1,r涓茶仈锛岀數鍘嬭〃娴嬬殑鏄痳2,r3,r4骞惰仈鍚庝笌r1涓茶仈閮ㄥ垎鐨勭數鍘 鐢垫祦琛ㄦ槸r2,r3鐢垫祦涔嬪拰銆傜粨鏋滃凡缁忔湁澶х缁欏嚭浜...
绛旓細鍋囪鐢佃矾鍥惧鍥炬墍绀锛氳缁忚繃R3鐨勭數娴佷负I3锛岀粡杩R1鐨勭數娴佷负I1锛岀粡杩嘡2鐨勭數娴佷负I2锛涜I2鍜孖3鐨勭數娴侀兘鏄嚜涓嬭屼笂锛孖1鐨勭數娴佹槸鑷笂鑰屼笅鐨勶紱鍒橵3=I3脳R3锛涳紙V3-V1锛/R2=I2锛涳紙V3-V2锛/R3=I3锛汭2+I3=I1锛涜仈绔嬩互涓婂悇寮忓甫鍏ユ暟鎹嵆鍙眰寰楋紝濡傛灉鐢垫簮鐨勬瀬鎬х浉鍙嶅垯鐩稿簲鏀瑰彉銆傘
绛旓細鈭R1=R2=R4=R5 鈭碪s0=Us/(R2+R5)*R5 =21梅(9+9)脳9 =10.5V
绛旓細I=E/R =6/6000A =0.001A 鎵浠ユ墍姹傜數鍘嬩负U=IR4=3V
绛旓細濡傚浘鎵绀虹數璺,宸茬煡R1=R2=R3=1惟,E1=2V,E2=4V銆傝瘯鐢ㄦ敮璺數娴佹硶姹侷1,I2,I3鐓у嚭鏉ョ殑鐓х墖涓婁紶鍚庡眳鐒跺彉妯＄硦浜,宸﹁竟鏄R1,涓棿R3,鍙宠竟R2... 濡傚浘鎵绀虹數璺,宸茬煡R1=R2=R3=1惟,E1=2V,E2=4V銆傝瘯鐢ㄦ敮璺數娴佹硶姹侷1,I2,I3鐓у嚭鏉ョ殑鐓х墖涓婁紶鍚庡眳鐒跺彉妯＄硦浜,宸﹁竟鏄疪1,涓棿R3,鍙宠竟R2 灞曞紑 鎴戞潵绛 1...
绛旓細鈶犲彧闂悎K1鏃讹紝鐢甸樆R1涓嶳x涓茶仈锛濡傚浘1鎵绀锛氭鏃鐢佃矾涓殑鎬荤數闃讳负锛歊=R1+RX=R0+RX锛岃岀數婧愮數鍘嬩负U锛屸埓姝ゆ椂鐢佃矾涓殑鐢垫祦涓猴細I1=UR=UR0+RX锛屽垯鐢甸樆R1鐨勭數鍔熺巼涓猴紱P1=I12R1=锛圲R0+RX锛2R0锛庡綋K1銆並2閮介棴鍚堟椂锛孯1銆丷2骞惰仈鍚庝笌Rx涓茶仈锛屽鍥2鎵绀猴細鐢甸樆R1銆丷2骞惰仈鍚庡綋鐢甸樆涓猴細R骞=R1?R2R1...
