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  • Can someone help me with this, while calculating current passing through a wire which area is taken?

while calculating current passing through a wire which area is taken?

  • Option 1)

    Area perpendicular to the flow of current

  • Option 2)

    Area parallel to the flow of current

  • Option 3)

    Any area

  • Option 4)

    Maximum area

 

Answers (1)

best_answer

As we learnt

 

If current not Perpendicular to Area -

 

J_{av}=\frac{di}{dA \cos\theta}

di=JdA \cos\theta=\vec{J}\cdot d\vec{A}

- wherein

 

 

 

We always take that area which is perpendicular to the current flow.


Option 1)

Area perpendicular to the flow of current

Option 2)

Area parallel to the flow of current

Option 3)

Any area

Option 4)

Maximum area

Posted by

Plabita

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