**23.17.You are watching: In the figure the point charges are located** three equal optimistic charges q are at the corners of an equilaeral triangle of side a, as presented in number P23.17.

(a) Assume that the 3 charges with each other creat an electrical field. Find the location of a suggest (other than at infinity) where the electric field is zero. (Hint: map out the ar lines in the airplane of the charges.)

(b) What are the magnitude and also direction that the electric field at P as result of the two charges in ~ the base?

(a) Assume the the 3 charges together creat an electric field. Uncover the place of a point (other than at infinity) whereby the electrical field is zero. (Hint: map out the ar lines in the airplane of the charges.)

**By symmetry,** the ar is **zero** at the center of the triangle.

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Use that **symmetry** is important!

(b) What space the magnitude and direction the the electrical field in ~ P due to the 2 charges in ~ the base?

First, one associated, number problem:

Three suggest charges are situated at the corners of an it is intended triangle as in figure P23.17. Calculation the net electric force top top the 7.0 microCoulomb charge.

Sometime, some civilization consider it easier to deal with **numerical** problems contrasted to **symbolic** problems. Typically, tho", icons are easier to resolve than numbers. Now, let"s go on with the inquiry as stated.

What space the magnitude and also direction of the electric field at P as result of the 2 charges in ~ the base?

**(b) **What space the magnitude and direction the the electrical field in ~ P because of the 2 charges in ~ the base?

Due to the fee on the left, there is an electrical field El that has actually a **magnitude** of

El = k q / a2

Due come the charge on the right, over there is an electrical field Erl that has actually a **magnitude** of

Er = k q / a2

The **total** or **net** electric field is the **vector amount **of these these two electrical fields,

Which directions perform these individual electric field vectors point? make **good** diagrams!