Lag1989 task №12.35

Lag1989 task №12.35

Find the work that must be done to transfer a point charge q=42 nC from a point located at a distance a=1 m to a point located at a distance b=1.5 cm from the surface of a sphere with a radius R=2.3 cm and a surface charge density of 4.3*10-11 C/m2.

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