A parallel plate capacitor has plates of area 200 cm2 and separation among the plates 1.00 mm. What potential difference will be manufactured if the charge of 1 nC is given to the capacitor? If the plate separation is now enhanced to 2.00 mm, what will be the new potential difference?
(a) An isolated sphere has a capacitance of 50 pF.
(b) Measure its radius