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Questions  

If Electric field directed parallel to axis is represented  by graph, and potential at origin is taken as zero. Find potential at x = 8 m  

a
-90 V
b
-100 V
c
80 V
d
-80 V

detailed solution

Correct option is A

∫dV=−∫x=0x=8Edx=-(area under the graph)⇒V-0 =- 10×2+1210+202+1220×4=-90⇒V=-90V

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