1. Plaub lub capacitors, C 1 = 2 μF, C 2 = 1 μF, C 3 = 3 μF, C 4 = 4 μF, tau 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:
1/C = 1/C 1 + 1/C 2 + 1/C 3 + 1/C 4
1/C = 1/2 + 1/1 + 1/3 + 1/4
1/C = 6/12 + 12/12 + 4/12 + 3/12
1/C = 25/12
C = 12/25
C = 0.48
Qhov sib npaug ntawm tag nrho cov kev sib xyaw ua ke yog 0.48 μF.
[irp]
2. Txheeb xyuas qhov them ntawm lub capacitor C 1 yog tias qhov sib txawv ntawm P thiab Q yog 12 Volts…
Paub:
Lub Capacitor C 1 = 1 0 μ F = 1 0 x 10 -6 F
Lub Capacitor C 2 = 2 0 μ F = 2 0 x 10 -6 F
Qhov sib txawv ntawm lub zog (V) = 12 Volts
Xav tau: tus nqi ntawm lub capacitor C 1 (Q 1 )
Tshuaj:
Lub peev xwm sib npaug:
1/C = 1/C 1 + 1/ C 2
1/C = 1/10 + 1/20 = 2/20 + 1/20 = 3/20
C = 20/3 μF = (20/3) x 10 -6 F
Lub zog hluav taws xob ntawm lub capacitor sib npaug:
Q = (C)(V) = (20/3)(12)(10 -6 ) = 80 x 10 -6 C
Q = 80 μC
Cov capacitors txuas ua ke ua series kom cov nqi hluav taws xob ntawm cov capacitors sib npaug = nqi hluav taws xob ntawm capacitor C1 = nqi hluav taws xob ntawm capacitor C2.
Lub zog hluav taws xob ntawm lub capacitor C1 yog 80 μC.
[irp]
3. Ob lub capacitors, C 1 = 2 μF thiab C 2 = 4 μF, txuas ua ke. Cov capacitors raug them. Qhov sib txawv ntawm lub capacitor C 1 yog 2 Volts. Lub zog hluav taws xob ntawm lub capacitor C 2 yog…
Paub:
C apa c itor C 1 = 2 μ F = 2 x 10 -6 F
C apa c itor C 2 = 4 μ F = 4 x 10 -6 F
Qhov sib txawv ntawm lub capacitor C 1 (V 1 ) = 2 Volts
Xav tau : Lub zog hluav taws xob ntawm lub capacitor C2.
Tshuaj:
Lub zog hluav taws xob ntawm lub capacitor C1 :
Q 1 = C 1 V 1 = (2 x 10 -6 )(2) = 4 x 10 -6 C
Q 1 = 4 μC
Cov capacitors txuas ua ke ua series kom lub zog hluav taws xob ntawm capacitor C1 = lub zog hluav taws xob ntawm capacitor C2.
Tus nqi ntawm lub capacitor C2 yog 4 μC.
