1. Plaub lub capacitors , C 1 = 2 μF, C 2 = 1 μF, C 3 = 3 μF, C 4 = 4 μF, txuas ua ke. Txheeb xyuas qhov capacitance ntawm ib lub capacitor uas yuav muaj tib qho txiaj ntsig zoo li kev sib xyaw ua ke.
Paub:
Lub Capacitor C 1 = 2 μ F
Lub Capacitor C 2 = 1 μ F
Lub Capacitor C 3 = 3 μ F
Lub Capacitor C 3 = 4 μ F
Xav tau: Qhov sib npaug ntawm capacitance
Tshuaj:
Lub peev xwm sib npaug:
C = C 1 + C 2 + C 3
C = 4 μF + 2 μF + 3 μF = 9 μF
Qhov sib npaug ntawm tag nrho cov kev sib xyaw ua ke yog 9 μF.
[irp]
2. Txheeb xyuas qhov them ntawm lub capacitor C 2 yog tias qhov sib txawv ntawm cov ntsiab lus A thiab B yog 9 Volts…
Paub:
C apa c itor C 1 = 20 μ F = 20 x 10 -6 F
C apa c itor C 2 = 30 μ F = 30 x 10 -6 F
Qhov sib txawv ntawm cov ntsiab lus A thiab B (V AB ) = 9 Volts
Xav tau : tus nqi ntawm lub capacitor C2 ( Q2 )
Tshuaj:
Qhov txawv ntawm qhov muaj peev xwm:
Cov capacitors txuas ua ke sib luag kom qhov sib txawv ntawm A thiab B (V AB ) = qhov sib txawv ntawm capacitor C 1 (V 1 ) = qhov sib txawv ntawm capacitor C 2 (V 2 ) = 9 Volts.
Lub zog hluav taws xob ntawm lub capacitor C2 :
Q 2 = C 2 V 2 = (30 x 10 -6 )(9) = 270 x 10 -6 C
Q 2 = 270 μC
Lub zog hluav taws xob ntawm lub capacitor C2 yog 270 μC.
[irp]
3. Peb lub capacitors, C 1 = 4 μF, C 2 = 2 μF, C 3 = 3 μF, txuas ua ke. Cov capacitors raug them. Qhov sib txawv ntawm lub peev xwm ntawm capacitor C 2 yog 4 Volts. Txheeb xyuas seb
(a) Lub zog hluav taws xob ntawm cov capacitors C 1 , C 2 thiab C 3
(b) Lub zog hluav taws xob ntawm lub capacitor sib npaug ntawm tag nrho cov kev sib xyaw ua ke
Paub:
C apa c itor C 1 = 4 μ F = 4 x 10 -6 F
C apacitor C 2 = 2 μ F = 2 x 10 -6 F
C apacitor C 3 = 3 μ F = 3 x 10 -6 F
Qhov sib txawv ntawm lub capacitor C2 ( V2 ) = 4 Volts
Xav tau : Fais fab them rau capacitor C3 ( Q3 )
Tshuaj:
(a) Lub zog hluav taws xob ntawm lub capacitor C 3
Qhov sib txawv ntawm lub capacitor C3 :
Cov capacitors txuas nrog parallel kom qhov sib txawv ntawm lub peev xwm ntawm capacitor C3 (V3) = qhov sib txawv ntawm lub peev xwm ntawm lub capacitor C2 (V2) = qhov sib txawv ntawm lub peev xwm ntawm lub capacitor C1 (V1) = qhov sib txawv ntawm cov capacitors sib npaug (V) = 4 Volt
Lub zog hluav taws xob ntawm lub capacitor C1 :
Q 1 = C 1 V 1 = (4 x 10 -6 )(4) = 16 x 10 -6 C
Q 1 = 16 μC
Lub zog hluav taws xob ntawm lub capacitor C2 :
Q 2 = C 2 V 2 = (2 x 10 -6 )(4) = 8 x 10 -6 C
Q 2 = 8 μC
Lub zog hluav taws xob ntawm lub capacitor C3 :
Q 3 = C 3 V 3 = (3 x 10 -6 )(4) = 12 x 10 -6 C
Q 3 = 12 μC
(b) Lub zog hluav taws xob ntawm lub capacitor sib npaug
Q = Q 1 + Q 2 + Q 3
Q = 16 μ C + 8 μ C + 12 μ C = 36 μ C
Lwm txoj kev daws teeb meem:
Lub peev xwm sib npaug:
C = C 1 + C 2 + C 3
C = 4 μF + 2 μF + 3 μF = 9 μF
C = 9 x 10 -6 F
Qhov sib txawv ntawm qhov sib npaug ntawm lub capacitor:
V 1 = V 2 = V 3 = V = 4 Volt
Lub zog hluav taws xob ntawm lub capacitor sib npaug:
Q = CV = (9 x 10 -6 )(4) = 36 x 10 -6 C
Q = 36 μC
