A parallel plate capacitor with plates of area (A) and plate separation (d) is charged so that the potential difference between its plates is (V). If the capacitor is now disconnected from the power source and its plate separation is increased to 2d, which statement is correct? a) The voltage between the plates is unchanged.
b) The voltage between the plates is decreased to one-half its original value.
c) The charge on the plates is decreased to one-half its original value.
d) The capacitance is unchanged.
e) The capacitance is increased two times its original value.
f) The charge on the plates is increased two times its original value.
g) The capacitance is decreased to one-half its original value.

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r