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1、1-11-1I10.1AI21-11-21-2U1-31-3u10sin100tmVt=0.005su?1-21-3u=sin100(*0.005)=10sin0.5=10mv1-41-41-4(a)p=1*2=2w()(b)p=1*2=2w()1(c)p=-1*2=2w()(d)p=1*2=2w()1-51-51-5(a)U=-2mV(b)I=-2A-t(c)P=-3ew1-612V8500J12W500(1)p=0.017Wt83600P0.0173(2)I=1.45445410AU121-71-71-71-81-8i21-8ai=7+5=12Abi=
2、4+1-1=5A1-91-9RIR=8+(13-3)=18AR=U/IR=11-101-10ui1-91-10U=7+5=12VI=U/R=12/1000=12mA1-111-111iu1.6mA,6.3V,R2uR6.3V,21?3u8V0.24Wi6.3(1)R=3.94K31.6102u(2)P=1.89WRp(3)i=0.03Au31-121-12(a)1-12(b)C100pFi1-111-120t1ms3u(t)(2t2)101mst2ms22mstt1ms0du(t)iCc200nA1mst2msdt02mst1-13iuC=0.2F1u=5
3、+3cos200tVit();2t0iu8e100tmA,(0)100Vt0u(t)duc6(1)i(t)c0.210(600)ssisin200t0.12sin200tmAdt1t100t(2)u(t)u(0)id500550004400eVC01-14iuL=25mHi8(1e500t)mAt=2msdi500tmVuL100edtwpui
4、186t2ms1-151-15uiu=-6+3=-3Vi=3.8A1-161-16i41-151-16I=0.5A1-171-17u2040u=10*(3+2)=50V-181-18is1-171-18is=-50
5、mA1-191-19usus=100V1-201-20uis1-191-20u=8Vis=1A1-211-2151-21P2A=(10-8)*-2=-4WP8v=8*(-2)=-16WP-4A=10*--4=40WP5A=10*5=-50WP-3A=--3*10=30W1-221-221-22a,cKVL,KCL.1-231-231-2310W61-241-24diauL
6、t2ms0PL=0dt(b)i=2*2=4AP=5*4=20w1-251-25us1VuR9V1-241-2512Pus=-us*5us=-5WPuR=us*5us=45WP5us=(u
7、s-uR)*5us=-40W1-261-26uis=2Au=*3is6*636V1-271-27us1-261-27iu1=7-2=5A,u1=-12V,us=u1+8=-4Vius=9.5APus=(-4)*9.5=-38WP0.25u1=-4*(-12*0.25)=12W72-12-1Is=16.5mARs=2kR1=40kR2=10kR3=25kI1I2I3Rs+I1I2I3IsUR1R2R32-1UI(R//R//R)16.5(40//10//25)100Vs123IUR10040k2.5mA11IUR10010k10mA22IUR10025k4m
8、A332-22-2us=100VR1=2kR2=8kk1R3=8k2R3=R33R3=0R33u2i2i3+i2i3u+sR2u2R3R12-21R3=8kR2//R3=44kuus(R//R)1004200V2RR//R232431232003iuR253mA2228k2003iuR253mA3238k2R3=R3u100suR880V22RR2812iu(RR)10010mA2s12(28)ki033R3=0R31u0,i022uis10050mA3R2k12-32-31u2i22R1R1+i2isu2R2R3+usR42-3RRR2331ui,ii2
9、s2sRRRR23232R1R12-42-4Rg==11kkIg=100µA1mA10mA100mARgIgR3R2R1321100mA10mA1mAS+2--4413(110100)(RRR)1001k123RRR19k111.1112323(1010100)(RR)100(R1k)231R100,RR11.1112333(10010100)R100(RR1k)3122R10,R1.1123R100,R10,R1.111232-52-5I+2+I6V4V2A61342-52+I2+I4V4V2A32A614A2144+2+I++I8V4V8V4V1124
10、44II2A41A413A21I232A32-62-6u0usR1
