CBSE Class 10 Answered
is potential difference between different points of circuit same or different.
Asked by chander_dadlani | 28 Apr, 2020, 11:47: AM
Expert Answer
This question is already answered.
If explanation is not clear please check the below explanation.
The amount of work done in moving a unit charge from one point to another point is called potential difference between two points in an electric circuit.
For example :
If the work done in moving a charge of 2 coulomb (Q) is 20 Joules (W), then the potential difference across this circuit is the ratio of work done on moving this charge to the magnitude of thie charge.
Mathematically the potential difference (V) across this circuit is
Another example is: -
Consider that we have to find the potential difference between the point A and B of wire given above.
Here, we can see that point A is at potential 110 V and point B is at potential 10 V.
Thus potetial difference between A and B will be = Point at higher potential - Point at lower potential = 110 - 10 V = 100 V
Thus, potential difference between point A and B is 100 V
Potential difference is also known as voltage.
Potential difference is product of current and resistance in the circuit.
The electrical potential and potential difference are two different quantities. If the two points are at same potential then the current will not flow between such points.
For current to flow between any two points electric potential between two points must be different as explained in the diagram given above.
Hope this clears your doubt!!!
Link of the answer provided to you earlier is given below: -
It explains in which case the potential difference can be same or different.
Answered by Shiwani Sawant | 28 Apr, 2020, 01:22: PM
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