How Does Charge Distribution Affect Electric Field and Potential at Point P?

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The discussion focuses on solving a physics problem involving two equal but opposite charges, Q = 0.82 C, separated by 2.0 m, and determining the electric field and potential at point P. Participants emphasize the need for appropriate equations for electric field and electric potential, noting that the electric field is a vector quantity requiring component breakdown, while potential is scalar. The equation for electric potential energy (EPE = kq/r) is mentioned, but additional equations for electric field calculations are necessary. The initial poster expresses confusion about how to begin the problem. Understanding the distinction between vector and scalar quantities is crucial for solving the problem effectively.
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Homework Statement



Two charges of opposite sign and equal magnitude Q = 0.82 C are held 2.0 m apart as shown in the figure.

Picture: http://gyazo.com/a78a049ce0a24ad464fd7bb99dffd665

A) Determine the magnitude of the electric field at the point P.
B) Determine the electric potential at the point P.
C) How much work is required to move a 1.0 C charge from infinity to the point P?

Homework Equations



EPE=kq/r

The Attempt at a Solution



I am really stuck...I have no clue where to start
 
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Encrypted1 said:

Homework Statement



Two charges of opposite sign and equal magnitude Q = 0.82 C are held 2.0 m apart as shown in the figure.

Picture: http://gyazo.com/a78a049ce0a24ad464fd7bb99dffd665

A) Determine the magnitude of the electric field at the point P.
B) Determine the electric potential at the point P.
C) How much work is required to move a 1.0 C charge from infinity to the point P?

Homework Equations



EPE=kq/r

The Attempt at a Solution



I am really stuck...I have no clue where to start

Hey there!
You have 3 problems, but only one equation - you're going to need the equation for electric field, and electric potential.

I'm just going to give you a pointer for now - electric field is a vector quantity, so you'd be best off if you tried to break the electric field of each charge into its respective x and y components. Potential and Potential Energy are scalar quantities, so direction doesn't matter - the distance between the charge and the point does.
 

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