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A solid spherical conductor of radius R has a spherical cavity inside it (see figure). A point charge q is placed at the centre of the cavity. (a) What is the potential of the conductor? (b) If the charge q is shifted inside the cavity by a distance `Deltax`, how does the potential of the conductor change?(c) How does your answer to the question (a) and (b) change if the cavity is not spherical and the charge q is placed at any point inside it (see figure) (d) Draw electric field lines in entire space in each case. In which case all field lines are straight lines

Answer» Correct Answer - (a). `(1)/(4pi in_(0))(q)/(R)`
(b). No change.
(c). No change.


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