Electrostatic Potential And Capacitance

Question

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A proton placed in a uniform electric field of magnitude 2000 N/C moves between two points in the direction of electric field. If the distance between the points is 0.2 m, find value of (i) p.d. between the points (ii) work done.

Solution

Given, a proton is placed in uniform electric field and it moves between two points in the direction of electric field.
Magnitude of electric field, E= 2000 N/C
Charge on proton, q= 1.6

\times

10^-19 C
i) Potential differnce is given by, V= Ed
=

2000 \times 0.2

400 V

ii) Work done , W = qV

= 1.6 \times 10^{- 19} \times 400 = 640 \times 10^{- 19} J

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Electrostatic Potential And Capacitance

A proton placed in a uniform electric field of magnitude 2000 N/C moves between two points in the direction of electric field. If the distance between the points is 0.2 m, find value of (i) p.d. between the points (ii) work done.

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