Electric field intensity

[john234]

Hi all, I´d need your help to complete this example.

Balls of identical mass and identical charge q hang from nonconducting threads of length l.

We are supposed to : 1) calculate the electric field intensity at the place of a joint two lines, the point A
2) electric potential at the point O



Would u be so kind and help me ? I´m really helpless...

Thanks a lot for your time

John

 

[Deleted member 4993]

Hi all, I´d need your help to complete this example.

Balls of identical mass and identical charge q hang from nonconducting threads of length l.

We are supposed to : 1) calculate the electric field intensity at the place of a joint two lines, the point A
2) electric potential at the point O



Would u be so kind and help me ? I´m really helpless...

Thanks a lot for your time

John

Hint:Use Coulomb's Law

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[john234]

Well to calculate the electric field intensity at the place of a joint two lines, the point A - I think that final electric intensity´ll be divided into 3 intensities, one will be in the direction of horizontal axis and the second in the direction of the vertical axis. In the horizontal the intensity should be zero. But don´t know how to do with the intensity in the direction of the vertical axis.

And to calculate the potential at the point O - it ought to be probably the sum of 2 potentials, but don´t know where to get it.

Could you please help me?

Thanks in advance

John

 

[Ishuda]

Well to calculate the electric field intensity at the place of a joint two lines, the point A - I think that final electric intensity´ll be divided into 3 intensities, one will be in the direction of horizontal axis and the second in the direction of the vertical axis. In the horizontal the intensity should be zero. But don´t know how to do with the intensity in the direction of the vertical axis.

And to calculate the potential at the point O - it ought to be probably the sum of 2 potentials, but don´t know where to get it.

Could you please help me?

Thanks in advance

John

Do some reading such as
https://en.wikipedia.org/wiki/Coulomb's_law

 

[Deleted member 4993]

Well to calculate the electric field intensity at the place of a joint two lines, the point A - I think that final electric intensity´ll be divided into 3 intensities, one will be in the direction of horizontal axis and the second in the direction of the vertical axis. In the horizontal the intensity should be zero. But don´t know how to do with the intensity in the direction of the vertical axis.

And to calculate the potential at the point O - it ought to be probably the sum of 2 potentials, but don´t know where to get it.

Could you please help me?

Thanks in advance

John

What is Coulomb's Law?