I

1
Example calculate the equivalent resistance of
the resistor ladder shown. All resistors have
the same resistance R.
Ill work this conceptually.
A
B
Heres the key to solving Physics problems
dont bite off more than you can chew. Bite off
little bite-sized chunks.
2
A hot dog. Where do you take the first bite?
A
B
3
Not a law of physics, but sometimes helps with
circuits look for bite-sized chunks sticking
out at one end.
Series
A
B
4
The new color indicates the value of the
resistance is not R. In a real problem, you
would calculate the new color resistors
resistance.
Parallel
A
B
Any more bite-sized chunks?
5
Series
A
B
6
Parallel
A
B
7
Series
A
B
8
All done!
A
B