Electrostatic P...

The separation between the plates of $$C_1$$ of Fig is doubled and a dielectric of strength 6 is added in between the plates of $$C_2$$. Find the the change in potential drop across $$C_1$$ and $$C_2$$:

An electron is taken from point $$A$$ to point $$B$$ along the path $$AB$$ in a uniform electric field of intensity $$\displaystyle E = 10 Vm^{-1}$$. Side $$AB = 5 m$$, and side $$BC = 3 m$$. Then, the amount of work done on the electron by us is :

A parallel plate capacitor is charged to a certain voltage. Now, if the dielectric material (with dielectric constant k) is removed then the

Two parallel metal plates having charges +Q and -Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will :

A foil of aluminium of negligible thickness is inserted in between the space of a parallel plate condenser. If the foil is electrically insulated, the capacity of the condenser will :

If in a parallel plate capacitor, which is connected to a battery, we fill dielectrics in whole space of its plates, then which of the following increases?

A parallel plate condenser with oil between the plates (dielectric constant of oil $$K=2)$$ has a capacitance C. If the oil is removed, then capacitance of the capacitor becomes :

A parallel plate capacitor with air between the plates is charged to a potential difference of $$500 V$$ and then insulated. A plastic plate is inserted between the plates filling the whole gap. The potential difference between the plates now becomes $$75V$$. The dielectric constant of plastic is :

Three capacitors each of capacity $$4\mu F$$ are to be connected in such a way that the effective capacitance is $$6\mu F$$. This can be done by :

Two capacitors of capacitance C are connected in series. If one of them is filled with dielectric substance k, what is the effective capacitance?