# Potential Difference between 2 points

I am new to electrical engineering and I know almost absolutely nothing, but I am working on it by doing some practice questions that I found online. I am at 2 questions, which are:

Find the total resistance of the circuit and potential difference between points A and B

I've done the first questions, finding the total resistance of the circuit but I'm not sure that I've done it right. Any help would be great .

I've done:=R1+R2+R3+R4 because circuit is in series right ? 40Ω+60Ω+120Ω+40Ω=260Ω

• it is unclear what total resistance of the circuit actually means ... resistance would be measured between two points ... the only way to have all four resistors in series, is to break the circuit at any node Jul 6 at 18:32