Suppose a parallel plate capacitor is charged and the source of charge is then d

Question

Suppose a parallel plate capacitor is charged and the source of charge is then disconnected. If the plates of the capacitor are pulled farther apart
a. the electric potential difference between the plates will increase.
b. the electric potential difference between the plates will remain unchanged.
c. the electric potential difference between the plates will decrease.
d. the electric charge on the plates will increase.
e. the electric charge on the plates will decrease.

Several capacitors of different values are connected in series across a battery. In that case
the potential across each of them will be the same.
a. the charge of each of them will vary inversely with the value of its capacitance.
b.the potential across each of them will be proportional to its capacitance.
c.the charge on each of them will vary proportional to its capacitance.
d.the charge on each of them will be the same.

The electric potential at a distance r from a point charge q is
a. proportional to r2.
b. proportional to 1/r.
c. proportional to r.
d. proportional to 1/r2.

Explanation / Answer

a. the electric potential difference between the plates will increase. d.the charge on each of them will be the same. b. proportional to 1/r.

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