Effective Resistance of Network

R

1

(ohms)

10

R

2

(ohms)

10

R

3

(ohms)

10

R

4

(ohms)

10

R

5

(ohms)

10

Applying successively the laws of addition of series and parallel resistances, you can build up the total resistance:

R=

R

1234

+

R

5

,

1

R

1234

=

1

R

123

+

1

R

4

,

R

123

=

R

1

+

R

23

,

1

R

23

=

1

R

2

+

1

R

3

. The equivalent-resistance circuit is shown at the bottom.