# finding current

#### pigpen

Joined Jan 26, 2016
23
ok

#### phantomvs

Joined Jan 19, 2016
39
Don't worry guys i am now grasping the idea before Pigpen even pointed it out.

.Slowly but surely

Thanks again

#### JoeJester

Joined Apr 26, 2005
4,193
Even if R2's resistance were 1e-99, there would be current through R3. We might not be able to measure it yet, but it still exists mathematically.

What is the maximum resistance value for R2 to cause your 4.5 digit DMM to read 3.00 amperes. Assume for this exercise the DMM has zero error.

Last edited: