Workout the total resistance of the following circuits. All the values are ohms.

3 1

a) 5 7

8 4

5

4 6

b) 17 20 9

56 30

c) 12 20 40

5 4

2 1 21

d) 4

13 10 11

6

15

15

e) 24

2 40

4 10

1

90

1. R1 R2 R3

I Vbattery

Data / Workout:
R1=5 W / a) Req
R2 =10 W / b) I
R3= 7 W / c) V1, V2 y V3
Vbattery= 110V

2. R1 R2 R3

I Vbattery

Data / Workout:
V1= 10 V / a) V3
V2 =20 V / b) I
R3= 2 W / c) R2, R1
Vbattery= 40V

3. R1

I1

R2

I2

R3

I3

I Vbattery

Data / Workout:
R1= 4 W / a) Req
R2= 12 W / b) I
R3= 6 W / c) I1, I2, I3
Vbattery= 12 V


4. R1 R2

Ia

R3 R4

Ib

I

Data / Workout:
R1= 6 W / a) Req
R2= 2 W / b) I
R3= 20 W / c) Ia, Ib
R4= 4 W / d) V1, V2, V3, V4
Vbattery= 36 V

5. R1

I1

R2

I2

R3

I3

I Vbattery

Data / Workout:
I1 = 4 A / a) I3
I2 = 6 A / b) R3
I= 12 A / c) R1, R2
Vr3= 2 V

6. R1 I1 R3 I3

I R2 I2 R4 I4

Vbattery

Data / Workout:
R1= 3 W / a) Req
R2= 6 W / b) I
R3= 6 W / c) V1,V2, V3,V4
R4= 12 W / d) I1, I2, I3, I4
Vbattery= 18 V


7. R2 I2

R1

I1 R3 I3

Vbattery

Data / Workout:
R1= 4 W / a) Req
R2= 5 W / b) I1
R3= 20 W / c) Vr1
Vbattery= 40 V / d) I2, I3,V2, V3

8. R2 R3 Ia

R1

R4 Ib

I Vbattery

Data / Workout:
R1= 2 W / a) Req
R2= 1 W / b) I
R3= 5 W / c) Ia, Ib
R4= 3 W / d)V1,V2,V3,V4
Vbattery= 12 V

9. R1 R2 R3 Ia

R4 R5 Ib

I Vbattery

Data / Workout:
R1= 2 W / a) Req
R2= 3 W / b) I
R3= 5 W / c) Ia, Ib
R4 = 12 W / d) V1,V2,V3,V4
R4= 3 W
Vbattery= 30 V