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The electric potential in a certain reasons of space along +x axis varies as Vx=3x2+5 where x is in meters and v is in volts. The electric field at point (4,0) is
Electric potential V = 3x2+ 5 voltsThe electric potential changes only along x-axis, We know that Ex = -dV/dx ? Ex = - d(6x)/ dx = - 8xThe electric field at point (4,0) will be (here x = 4) Ex – 24 volt
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