A charge of 12 C is passing through points A and B on a circuit. If the charge's electric potential changes from 36 J to 12 J, what is the voltage between points A and B?

1 Answer
Feb 3, 2016

V_AB=-2 "Volt"

Explanation:

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"Electrical forces doing work if 12C of charge goes" "from the point A to B"
Delta W=q(V_B-V_A)
V_A-V_B=V_(AB) "we can write"
Delta W=q*V_(AB)
Delta W=W_B-W_A
Delta W=12-36=-24J
"finally:"
-24=12*V_AB
V_AB=-2 "Volt"