电工电子技术课后 答案第二版 (徐淑华 著)

习题二-22图u(0),i(0),i(0),i(0),i(0),u(0)CL12CLu(),i(),i(),i(),i(),u()。CL12CL6iR1R3iii)3A）13L111iiC2R3+4i)A+C2U2Cu-LLSt-i(0)i(0)1.5A3L图2.17习题2-2的电路u(0)i(0)R1.5Vcl4u(0)u(0)1.5Vcci(0)i(0)1.5ALL61.5RRi(0)i(0)2.25A1313i(0)02u(0)0L66i()i()2mARRR1111L134i()0,i()02cu()Ri()Vc4Lu()0L-23求图所示电路S接通和断开两种情况下的时间常数。已知：U220V,RRRR100Ω,C0.01μF。1234RR//(RR//R)100//(10050)04312R1SR3RC600.0110610s+670R2R4C-RR//(RR)100//20066.70432RC66.70.01106.6710s67图2.18习题2-3的电路0-24E20V,R12kΩ,R6kΩ,C10μ,C10μ，1212求t0()utCSR2+u(0)u(0)0+ccEu-Cu()E20Vc-RCRCC)61020101210s362221图2.19习题2-4的电路tut)u()u)u(euccccCt32020)e20et102t0-25ut)，it)RΩ2CCiCu(0)u(0)61060VRRcc31S+u()0cC2FuC-RC210(33//6)1010s632图2.20习题2-5的电路ttut)u()[u(0)u(e60e60e100t102cccct)it)Cc2(ee1t0C6100uCic0ttτ0-26ut)，it)。E100V,C0.25μ,RRR4ΩCC123R1R2iC++EuC-S-图2.21习题2-6的电路Ru(0)u(0)E50V3RRcc13u()100Vc82s66tut)u()u)u(ecccct100)et)50e5tV106it)cetAcc-7图SE10V,E5V,C100μ,RR4kΩ,R2kΩ12123E时电路处于稳态。求t0ut)，。i(t)1CiRR3R1u(0)u(0)E5V12iRRccC+tS12++uCcE1ER2--图u()cE2.5V2RR212图2.22习题2-7的电路(RRR)631236tut)u()u(0)u(ecccctt2.5(52.5)e2.5ee)V2.5t0.4i)R1R3t0u(0)5V当c+-5Vi(0)0.3125mA5VE5ti()20.625mA时RR4412ttit)i()i(0)i(e0.625(0.31250.625)e0.40.625e2.5t-28图C0.1μF,R6kΩ,RΩ,R2kΩ,I。123S()utC2u(0)u(0)RI61061036V33cc1SSRS1C3u()cIR8V1RRRS3123[RRR0.1s图2.23习题2-8的电路649312ttut)u()u(0)u(e8(368)e8e3tVccccuC3680t-29图出uo1Cuo解：36++0tti-Ruopp-0t时图2.24习题2-9的电路ttuUe0eeV100t0.01uotttt0.2uUe0110e10e100(t0.2)V0t0.01图it)LE4V,L,R,RR15Ω。13123iL+2t=0EL-S图2.25习题2-10的电路E4t0i(0)0.2ARR515L13i(0i(0)0.2LLERti()20.16AR(R//R)RRL12323LL0.010.015.10s4RRR/R155//1518.750312tit)i()i(0)i(e0.160.04e1875tALLLL图E6V,L0.01H,L0.02H,R2Ω,RΩ1212））S1当SSi,i1212i(0)0Ai(00A）SR1L11L21i(0)i(0)0AiR+121L2E2i2E-L2ti()2ARR112图2.26习题2-11的电路i()i()2AL21LLL0.01s21RRR012it)it)22eAit)it)22eA100t100t1L212Ei(0)i(0)2Ai(0)i(0)2A）RR1L21L212EL1R