First of all, let's know what really storing anything means. To store something implies there should be presence of some extra amount of it in them. Like same storage of energy or charge in any system implies the net charge or energy in the system is not equal to zero.

Now let's consider a parallel plate capacitor in which the plate connected to the positive terminal of a battery gets positive charge and induces same amount of negative charge on the another plate. So the total net charge...

Ans: No, a battery does not always produce the same current, no matter what circuit it’s used in. The current in any electric circuit consisting of a cell of emf E and internal resistance r and an external resistance R is given by

I = E/(R + r)

This equation shows that the current that asourceof emf produces in a given circuit depends on the external resistance R as well as the internal resistance r of the cell. The greater the resistance, the less current thesourcewill produce. So, however, a...

V=W/q

V=Fd/q

V=F/q*d

V=E.d [E=F/q]

E=V/d

When charge is given to a capacitor thepotential difference across its plates rises. Asthe more and more charge is given, itspotential increases accordingly. If a charge Qis given to the capacitor so that its potentialrises through V, then it has been found thatcharge Q stored in it is directly proportional topotential difference V across the plates of thecapacitor. So,

Q V

or

Q = CV

where C is a proportionality constant, calledthe capacitance of the capacitor. Its valuedepends upon the shape and...