potential difference class 10

 

ELECTRIC POTENTIAL AND POTENTIAL DIFFERENCE

 

ELECTRIC POTENTIAL OR POTENTIAL:-

In the Electric field , the electric potential is expressed as the work done in moving a unit  positive charge (+ve) from infinity to that particular point.

This is illustrated with a simple example.

Here , water do not flow in horizontal tube. So one end of tube of filled water tank or high level water tank  is connected to the empty tank or low level water tank , so that there will be pressure difference between the two ends of the tube . so the water flows from higher level water tank to end of the tube of low level water tank.

Similarly , in case of flows of charge in copper wire. In conducting metallic wire , there is a difference of electric pressure which is also called potential difference. Charges in metallic wire , also  flow from  a higher potential to lower potential.

Its noted that , there is no role of gravity for flow of charges.

 

 

 

POTENTIAL DIFFERNCE :--

 

The potential difference is defined as the work done to move a unit charge from one point to another point.

The SI unit of Potential Difference is volt which is denoted as V.

Potential difference (V) between two points = work done / charge

Its also expressed as :-

V = W/Q