An electric field E → = 25   i ^ + 30   j ^   N   C - 1 exists in a region of…

An electric field E→=25 i^+30 j^ N C-1 exists in a region of space. If the potential at the origin is taken to be zero then the potential at x=2 m, y=2 m is:
  1. -110 J C-1
  2. -140 J C-1
  3. -130 J C-1
  4. -120 J C-1

Solution

∵∆V=-E→.∆r→

V-0=-25i^+30j^. 2i^+2j^

=-50+60

V=-110 volt=-110 J C-1

Asked in: JEE Main 2015 (11 Apr Online)

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