![]() If, as before, we choose the potential to be zero at infinity, the above equation implies. Note : As before, that it is not the actual value of potential but the potential difference that is physically significant. Here V P and V R are the electrostatic potentials at P and R, respectively and U P and U R are the potential energies of a charge q when it is at P and at R respectively. Similar to electric potential, the electric potential difference is the work done by external force in bringing a unit positive charge from point R to point P. If ' W' is the work done in moving a charge ‘ q’ from infinity to a point, then the potential at that point is V = W / q. The electrostatic potential ( V) at any point in a region with electrostatic field is the work done in bringing a unit positive charge (without acceleration) from infinity to that point. Tool in solving Problems more easily in many cases then by using forcesĮlectric energy can be stored in a common deviceĬalled a capacitor, which is found in nearly all electronic circuits.Ī capacitor is used as a storehouse for energy. The energy point of view can be used in electricity and it is especially In this chapter, we shall focus Electrostatic Potential and Capacitance. In the previous chapter, we have learnt about " Electric Charges and Fields".
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