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Circuit mixt
Laia Rocamora
Calcular R12 i R34 Rt
• R12= R1+R2=10+20= 30Ω
• R34= R3+ R4= 23+24= 47Ω
• 1/Rt= /r12+1/R34= 1/30+1/47= 77/1.410 1.410/77=18’31Ω
Rt= 18’31 Ω R3=23
Vt=73V V3=
It= I3=
R1=10 Ω R4=24 Ω
V1= V4=
I1= I4=
R2= 20 Ω
V2=
I2=
R1= 10Ω R2=20Ω
R3=23Ω R4= 24Ω
Vt=73v
Per trobar la resistència 12 hem de sumar la resistència 1 i la resistència 2 i per calcular la resistència 34 hem
de fer el mateix.
Per calcular la resistència total hem de
Calcular It, V12 i V34
• It= Vt/Rt= 73/ 18’31= 3’99A
• Vt= V12, V34= 73=73 =73
Rt= 18’31 Ω R3=23 Ω
Vt=73V V3=
It= 3’99 A I3=
R1=10 Ω R4=
V1= V4=24 Ω
I1= I4=
R2= 20 Ω
V2=
I2=
•
Per calcular la resistència total utilitzem la llei d’ohm que consisteix en dividir el voltatge total per la resistència
total .
I per calcular el voltatge 12 i 34 es el mateix que el voltatge total
Calcular I12 I34 I1 I2 I3 I4
•
Per calcular la resistència 12 i 34 es fa també amb la llei d’ohm. I la intensitat I i
la intensitat 2 es la mateixa que la intensitat 12. I la intensitat 3 i 4 es la mateixa
que la 34
•
•
• I12= V12 / R 12= 73/30= 2’43 A
• I34= V34 / R34= 73/47= 1’55A
• I12= I1=I2= 2’43=2’43= 2’43
• I34= I3= I4= 1’55=1’55=1’55
Rt= 18’31 Ω R3=23 Ω
Vt=73v V3=
It= 3’99A I3= 1’55A
R1=10 Ω R4=24 Ω
V1= V4=
I1=2’53 A I4= 1’55A
R2= 20 Ω
V2=
I2=2’43A
Calcular V1 V2 V3 V4
• V1= R1x I1= 10x2’43= 24’3v
• V2= R2 x I2= 20x 2’43= 48’6 v
• V3= R3 x I3 = 23x 1’55= 35’7 v
• V4= R4 x I4 = 24X 1’55= 37’2 v
Rt= 18’31 Ω R3=23 Ω
Vt=73v V3= 35’7 v
It= 3’99A I3= 1’55A
R1=10 Ω R4=24 Ω
V1=24’3v V4= 37’2v
I1=2’53A I4= 1’55A
R2= 20 Ω
V2=48’6v
I2=2’43A
Per calcular el voltatge 1,2,3 i 4 multipliquem la resistència per la intensitat.
Resultatas
Rt= 18’31 Ω R3=23 Ω
Vt=73v V3= 35’7 v
It= 3’99A I3= 1’55A
R1=10 Ω R4=24 Ω
V1=24’3v V4= 37’2v
I1=2’53A I4= 1’55A
R2= 20 Ω
V2=48’6v
I2=2’43A
Resultatas
Rt= 18’31 Ω R3=23 Ω
Vt=73v V3= 35’7 v
It= 3’99A I3= 1’55A
R1=10 Ω R4=24 Ω
V1=24’3v V4= 37’2v
I1=2’53A I4= 1’55A
R2= 20 Ω
V2=48’6v
I2=2’43A

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Circuit mixt

  • 2. Calcular R12 i R34 Rt • R12= R1+R2=10+20= 30Ω • R34= R3+ R4= 23+24= 47Ω • 1/Rt= /r12+1/R34= 1/30+1/47= 77/1.410 1.410/77=18’31Ω Rt= 18’31 Ω R3=23 Vt=73V V3= It= I3= R1=10 Ω R4=24 Ω V1= V4= I1= I4= R2= 20 Ω V2= I2= R1= 10Ω R2=20Ω R3=23Ω R4= 24Ω Vt=73v Per trobar la resistència 12 hem de sumar la resistència 1 i la resistència 2 i per calcular la resistència 34 hem de fer el mateix. Per calcular la resistència total hem de
  • 3. Calcular It, V12 i V34 • It= Vt/Rt= 73/ 18’31= 3’99A • Vt= V12, V34= 73=73 =73 Rt= 18’31 Ω R3=23 Ω Vt=73V V3= It= 3’99 A I3= R1=10 Ω R4= V1= V4=24 Ω I1= I4= R2= 20 Ω V2= I2= • Per calcular la resistència total utilitzem la llei d’ohm que consisteix en dividir el voltatge total per la resistència total . I per calcular el voltatge 12 i 34 es el mateix que el voltatge total
  • 4. Calcular I12 I34 I1 I2 I3 I4 • Per calcular la resistència 12 i 34 es fa també amb la llei d’ohm. I la intensitat I i la intensitat 2 es la mateixa que la intensitat 12. I la intensitat 3 i 4 es la mateixa que la 34 • • • I12= V12 / R 12= 73/30= 2’43 A • I34= V34 / R34= 73/47= 1’55A • I12= I1=I2= 2’43=2’43= 2’43 • I34= I3= I4= 1’55=1’55=1’55 Rt= 18’31 Ω R3=23 Ω Vt=73v V3= It= 3’99A I3= 1’55A R1=10 Ω R4=24 Ω V1= V4= I1=2’53 A I4= 1’55A R2= 20 Ω V2= I2=2’43A
  • 5. Calcular V1 V2 V3 V4 • V1= R1x I1= 10x2’43= 24’3v • V2= R2 x I2= 20x 2’43= 48’6 v • V3= R3 x I3 = 23x 1’55= 35’7 v • V4= R4 x I4 = 24X 1’55= 37’2 v Rt= 18’31 Ω R3=23 Ω Vt=73v V3= 35’7 v It= 3’99A I3= 1’55A R1=10 Ω R4=24 Ω V1=24’3v V4= 37’2v I1=2’53A I4= 1’55A R2= 20 Ω V2=48’6v I2=2’43A Per calcular el voltatge 1,2,3 i 4 multipliquem la resistència per la intensitat.
  • 6. Resultatas Rt= 18’31 Ω R3=23 Ω Vt=73v V3= 35’7 v It= 3’99A I3= 1’55A R1=10 Ω R4=24 Ω V1=24’3v V4= 37’2v I1=2’53A I4= 1’55A R2= 20 Ω V2=48’6v I2=2’43A
  • 7. Resultatas Rt= 18’31 Ω R3=23 Ω Vt=73v V3= 35’7 v It= 3’99A I3= 1’55A R1=10 Ω R4=24 Ω V1=24’3v V4= 37’2v I1=2’53A I4= 1’55A R2= 20 Ω V2=48’6v I2=2’43A