已知R1=R2=R3=R4=R5=R,电池电压为u0，在理想状态下，求每个电阻的电流. 图示电路中，已知：R1=2R，R2=R5=5R，R3=2.5...
\u5df2\u77e5R1=R2=R3=R4=R5=1\u6b27\u59c6\uff0c\u8bf7\u8ba1\u7b97A.B\u70b9\u95f4\u7684\u7b49\u6548\u7535\u963bRab\u7b49\u4e8e\u591a\u5c11\uff1f\u672c\u9898\u7684\u7b49\u6548\u7535\u8def\u56fe\u5982\u4e0b\uff1a
\u7531\u56fe\u53ef\u77e5\uff1aR3\uff0cR4\u4e32\u8054\uff0c\u5219R3 + R4 =2 \u6b27\u59c6\uff0c\u5b83\u548cR5\u5e76\u8054\u5f972/3\u6b27\u59c6\uff0c\u7136\u540e\uff0c\u8fd9\u4e2a\u7535\u963b\u518d\u548cR2\u4e32\u8054\uff0c\u5f97\u5230\u7684\u7535\u963b\u662f5/3\u6b27\u59c6\uff0c \u6700\u540e\uff0c\u76f8\u5f53\u4e8e5/3\u6b27\u59c6\u7684\u7535\u963b\u548cR1\u5e76\u8054\u3002\u6240\u4ee5Rab=5/8\u6b27\u59c6\u3002
\u3000\u3000\u89e3\uff1a\u5c06R3=2.5\u03a9\u4ece\u7535\u8def\u4e2d\u65ad\u5f00\uff0c\u7aef\u53e3\u5de6\u53f3\u7aef\u5206\u522b\u4e3a\u8282\u70b9a\u3001b\u3002
\u3000\u3000\u7535\u8def\u5206\u89e3\u4e3a\u4e24\u4e2a\u90e8\u5206\uff0c\u4e24\u90e8\u5206\u4e4b\u95f4\u5b58\u6709\u6700\u4e0b\u9762\u7684\u516c\u5171\u8282\u70b9n\u3002
\u3000\u3000\u5de6\u9762\uff1a\u663e\u7136R1\u7684\u7535\u6d41\u4e3aIs2\uff0c\u65b9\u5411\u5411\u4e0a\u3002\u8bbeR4\u7684\u7535\u6d41\u4e3aI4\uff0c\u65b9\u5411\u5411\u5de6\uff0c\u5219\uff1aI4=Is1-Is2=5-1=4\uff08A\uff09\u3002
\u3000\u3000\u6240\u4ee5\uff1aUan=I4R4+Us1-Is1R1=4\u00d73+20-1\u00d72=30\uff08V\uff09\u3002
\u3000\u3000\u53f3\u9762\uff1a\u8bbeR2\u7684\u7535\u6d41\u4e3aI2\uff0c\u65b9\u5411\u5411\u4e0b\u3002\u6839\u636eKCL\u5219R5\u7684\u7535\u6d41\u4e3a\uff082-I2\uff09\uff0c\u65b9\u5411\u5411\u4e0b\u3002
\u3000\u3000\u6839\u636eKVL\uff1aR5\u00d7\uff082-I2\uff09=Us2+I2R2\uff0c5\u00d7\uff082-I2\uff09=10+5I2\u3002
\u3000\u3000\u89e3\u5f97\uff1aI2=0\uff0c\u6240\u4ee5\uff1aUbn=5\u00d7\uff082-I2\uff09=10\uff08V\uff09\u6216\u8005Ubn=Us2+I2R2=10V\u3002
\u3000\u3000\u56e0\u6b64\uff1aUoc=Uab=Uan-Ubn=30-10=20\uff08V\uff09\u3002
\u3000\u3000\u518d\u5c06\u7535\u538b\u6e90\u77ed\u8def\u3001\u7535\u6d41\u6e90\u5f00\u8def\uff0c\u5f97\u5230\uff1a
\u3000\u3000Req=Rab=R4+R1+R5\u2225R2=3+2+5\u22255=7.5\uff08\u03a9\uff09\u3002
\u3000\u3000\u6839\u636e\u6234\u7ef4\u5357\u5b9a\u7406\uff1aI3=Uoc/\uff08Req+R3\uff09=20/\uff087.5+2.5\uff09=2\uff08A\uff09\u3002
绛旓細鐢垫祦R1=R2=R4=R5=U0/2R R3=0
绛旓細灞閮ㄦ贩鑱旂數闃诲強鎬荤數闃伙紝缁撴灉濡備笅锛氭牴鎹苟鑱旂數璺垎娴佸叧绯伙細涓や釜鏀矾鐨勭數娴佷箣姣旓紝绛変簬涓や釜鏀矾鐨勭數闃诲掓暟涔嬫瘮锛屽彲鐭ワ紝娴佽繃锛R3銆R4鍜孯5锛夋贩鑱旈儴鍒嗙殑鎬荤數娴侊紙鍗虫祦杩嘡3鐨勭數娴侊級涓烘荤數娴佺殑浜斿垎鍊间簩锛2/5锛夎屾祦杩嘡4鐨勭數娴佷负娴佽繃R3鐨勭數娴佺殑涓鍗婏紝鍥犳 ...
绛旓細鍙互杩欐牱鎯筹紝鎶婂彸杈归偅涓鏂瑰舰宸︿笅瑙掑拰鍙充笅瑙掍袱涓妭鐐逛互R4閭ｆ潯绾夸负杞寸炕鎶樹竴涓嬮粡鍦ㄤ竴璧凤紙鍥犱负瀹冧滑涔嬮棿鏄绾胯仈閫氱殑锛屽彲浠ヨ繖鏍锋搷浣滐級锛岀劧鍚庣數璺氨绠鍗曚簡锛岀浉褰撲簬1娆у苟鑱3娆э紝鍐嶄覆鑱斾竴涓R1锛屾墍浠ュ簲璇ユ槸1*3/(1+3)+2=11/4娆
绛旓細濡傚浘1.4.1鎵绀轰负鏈甯哥敤鐨勭數闃荤數妗ワ紝鏈夊洓涓數闃荤粍鎴愭ˉ鑷傦紝涓涓瑙掓帴鐢垫簮锛屽彟涓涓綔涓鸿緭鍑恒傚鍥炬墍绀猴紝鐢垫ˉ鍚勮噦鐨勭數闃诲垎鍒负R1銆丷2銆丷3銆丷4锛孶涓虹數妗ョ殑鐩存祦鐢垫簮鐢靛帇銆傚綋鍥涜噦鐢甸樆R1=R2=R3=R4=R鏃讹紝绉颁负绛夎噦鐢垫ˉ锛涘綋R1=R2=R,R3=R4=R'鈮燫鏃讹紝绉颁负杈撳嚭瀵圭О鐢垫ˉ锛涘綋R1=R4=R锛孯2= R3=R'鈮燫...
绛旓細IF R2=30娆у Rab=1/{1/30+1/30+1/[40+1/(1/60+1/30)]}=12娆у Rab=1/{1/R1+1/R2+1/[R5+1/(1/R4+1/R3)]}
绛旓細骞惰仈鐢甸樆绛夋晥鐢甸樆璁＄畻鍏紡 1/r锛濓紙1/R1锛+锛1/R2锛夛級+锛1/R3锛夛級+锛1/R4锛夊洜涓 R1锛漅2锛漅3锛漅4锛漅 鎵浠1/r 锛4(1/R)r 锛漅/4
绛旓細Rab = 7惟 鐢佃矾浠跨湡缁撴灉濡備笅鍥撅細Rab = 7V / 1A = 7惟 鐢佃矾鍒嗘瀽濡備笅锛1锛岄鍏R4 琚彸杈圭殑绾胯矾缁欑煭璺簡锛岄偅涔堟妸R4 鎹㈡垚瀵肩嚎锛岀數璺氨鍙樺涓嬩簡锛2锛 鍐嶆妸鐢佃矾绠鍖栦笅锛屽悓鐢典綅鐨勮繛鎴愪竴鐐癸細3锛岃繖鏍风數璺氨寰堟竻鏅颁簡锛孯ab = 锛R1//R2//R3) + R5 = 1+ 6 = 7惟 鍙互鍏虫敞涓嬫垜鐨勫叕浼楀彿锛氬皬鍢...
绛旓細閭ｄ箞鎬荤數娴佹槸銆I鎬伙紳E /锛圧锛r锛夛紳4 /锛4锛0.2锛夛紳0.9523瀹 鑻ユ寜鐓у紑鍏砈`涓嶈捣浣滅敤锛堝幓鎺塖`鐪嬶級锛屽垯鏄R1鍜R3涓茶仈寰8娆э紝R2鍜R4涓茶仈寰8娆э紝瀹冧滑鍐嶅苟鑱斿緱鐢佃矾鐨勬荤數闃绘槸銆R鎬伙紳4娆с傚叾浠栧仛娉曞涓婅堪銆傛敞锛氳繖涓數璺叾瀹炴槸涓涓數妗ワ紝鐢变簬4涓數闃荤殑闃诲煎垰濂戒娇鐢垫ˉ骞宠 锛屾墍浠ュ紑鍏砈`涓棤鐢垫祦銆
绛旓細鍒嗘瀽锛氬師鐢佃矾鍥惧彲鐢讳负涓嬮潰鐩磋鍥俱傝閫氳繃R1鐨勭數娴佹槸I1锛岄氳繃R2鐨勭數娴佹槸I2锛岄氳繃R3鐨勭數娴佹槸I3锛岄氳繃R4鐨勭數娴佹槸I4銆傚垯銆U锛滻4 * R4 U锛漞1锛岻1*R1 U锛漞2锛岻2*R2 U锛漞3锛岻3*R3 I4锛滻1锛婭2锛婭3 鐢变簬銆R1锛漅2锛漅3锛漅4锛漅锛堜护姣忎釜鐢甸樆鐨勯樆鍊肩瓑浜嶳锛夛紝鎵浠ユ湁 3* U锛濓紙e1锛岻1*R1锛夛紜...
绛旓細涓銆佺洿娴佹祴閲忕數妗ュ垎鏋 濡傚浘1.4.1鎵绀轰负鏈甯哥敤鐨勭數闃荤數妗ワ紝鏈夊洓涓數闃荤粍鎴愭ˉ鑷傦紝涓涓瑙掓帴鐢垫簮锛屽彟涓涓綔涓鸿緭鍑恒1銆佹ˉ璺舰寮 濡傚浘鎵绀猴紝鐢垫ˉ鍚勮噦鐨勭數闃诲垎鍒负R1銆丷2銆丷3銆丷4锛孶涓虹數妗ョ殑鐩存祦鐢垫簮鐢靛帇銆傚綋鍥涜噦鐢甸樆R1=R2=R3=R4=R鏃讹紝绉颁负绛夎噦鐢垫ˉ锛涘綋R1=R2=R,R3=R4=R'鈮燫鏃讹紝绉颁负杈撳嚭瀵圭О...
