(a)[1]
State one likeness between the gravitational field lines around a point mass and the electric field lines around a point charge.
(b(i))[1]
From Fig. 6.1, state the radius of the sphere.
(b(ii))[2]
Calculate the charge on the sphere.
(c)[3]
Using the electric potential formula for an isolated point charge, determine the capacitance of the sphere in (b).