The figure shows equipotential lines in a region of space. The equipotential lin

Question

The figure shows equipotential lines in a region of space. The equipotential lines are spaced by the same difference in potential, and several of the potentials are given. A +50nC charge is moved from point c to point a.(Figure 1)

How much work is required in order to do this?

The figure shows equipotential lines in a region of space. The equipotential lines are spaced by the same difference in potential, and several of the potentials are given. A +50nC charge is moved from point c to point a.(Figure 1) How much work is required in order to do this?

Explanation / Answer

From the Figure

Potential at b = 50 V

Potential at a = -50 V

Potential at c = -400 V

==> Potential difference between c and a = 350 V

==> Work done = 350*50E-9 J = 1.75 E-5 J = 17.5 E-6 = 17.5 uF

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