1. Plaub capacitors, C1 = 2 μF, C2 = 1 μF, C3 = 3 μF, C4 = 4 μF, txuas ua ke. Txheeb xyuas qhov capacitance ntawm ib lub capacitor uas yuav muaj tib yam li kev sib xyaw ua ke.
Paub:
Capacitor C1 = 2 μF
Capacitor C2 = 1 μF
Capacitor C3 = 3 μF
Capacitor C3 = 4 μF
Xav tau: Qhov sib npaug ntawm lub peev xwm
Tshuaj:
Lub peev xwm sib npaug:
C = C1 +C2 +C3
C = 4 μF+2 μF+3 μF = 9 μF
Lub peev xwm sib npaug ntawm tag nrho cov kev sib xyaw ua ke yog 9 μF.
2. Txiav txim lub them ntawm lub capacitor C2 yog hais tias tus qhov sib txawv ntawm qhov muaj peev xwm nruab nrab ntawm qhov A thiab B yog 9 Volts…
Paub:
Cpab apacitor C1 = 20 μF = 20 x 10-6 F
Cpab apacitor C2 = 30 μF = 30 x 10-6 F
Qhov sib txawv ntawm cov ntsiab lus A thiab B (V)AB) = 9 Volt
xav : lub zog ntawm lub capacitor C2 (Q2)
Tshuaj:
Qhov txawv ntawm qhov muaj peev xwm:
Cov capacitors txuas nrog ua ke yog li ntawd qhov sib txawv ntawm A thiab B (V)AB) = qhov sib txawv ntawm lub peev xwm ntawm lub capacitor C1 (V1) = qhov sib txawv ntawm lub peev xwm ntawm lub capacitor C2 (V2) = 9 Volts.
Lub zog hluav taws xob ntawm lub capacitor C2 :
Q2 = C2 V2 = (30 x 10-6)(9) = 270 x 10-6 C
Q2 = 270 μC
Lub zog hluav taws xob ntawm lub capacitor C2 is 270 μC.
3. peb cov capacitors, C1 = 4 μF, C2 = 2 μF, C3 = 3 μF, txuas ua ke. Cov capacitors raug them. Qhov sib txawv ntawm lub peev xwm ntawm capacitor C2 yog 4 Volts. Txheeb xyuas
(a) Lub zog hluav taws xob ntawm lub capacitor C1, C2 thiab C3
(b) Lub zog hluav taws xob ntawm lub capacitor sib npaug ntawm tag nrho cov kev sib xyaw ua ke
Paub:
Cpab apacitor C1 = 4 μF = 4 x 10-6 F
Club capacitor C2 = 2 μF = 2 x 10-6 F
Club capacitor C3 = 3 μF = 3 x 10-6 F
Qhov sib txawv ntawm lub capacitor C2 (V2) = 4 Volt
xav : Lub zog hluav taws xob ntawm lub capacitor C3 (Q3)
Tshuaj:
(A) Lub zog hluav taws xob ntawm lub capacitor C3
Qhov sib txawv ntawm lub peev xwm 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 :
Q1 = C1 V1 = (4 x 10-6)(4) = 16 x 10-6 C
Q1 = 16 μC
Lub zog hluav taws xob ntawm lub capacitor C2 :
Q2 = C2 V2 = (2 x 10-6)(4) = 8 x 10-6 C
Q2 = 8 μC
Lub zog hluav taws xob ntawm lub capacitor C3 :
Q3 = C3 V3 = (3 x 10-6)(4) = 12 x 10-6 C
Q3 = 12 μC
(B) Lub zog hluav taws xob ntawm lub capacitor sib npaug
Q = Q1 + Q2 + Q3
Q = 16 μC + 8 μC + 12 μC = 36 μC
Lwm txoj kev daws teeb meem:
Lub peev xwm sib npaug:
C = C1 +C2 +C3
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:
V1 =V2 =V3 = 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
