Wednesday, 11 May 2016

Measuring voltage between two points


I Have the following Schematic:


Schematic of Two batteries


The book i am using ask for \$V_{BC}\$ which I found by \$V(B) - V(C) = 0V - 9V = -9V\$


The book gives the answer as 9V, is it safe to assume that since voltage is similar to pressure, we cant have negative pressure so I can take the modulus of my result and it would be equal to the 9V would this be allowed ?





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