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## Main Question or Discussion Point

In the derivation for equation 24-2 in the picture below., the line integral was chosen along a path anti-parallel to the field lines. As a result, cos(180) = -1, which made the integral for the voltage positive.

However, in examples 24-2 and 24-3, the line integral is also taken as anti-parallel to the field lines, but the voltage integral remains negative. This seems contradictory.

However, in examples 24-2 and 24-3, the line integral is also taken as anti-parallel to the field lines, but the voltage integral remains negative. This seems contradictory.