- #1

satchmo05

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## Homework Statement

E-field at (2[m], 30⁰, 90⁰) is

**E**= 4

**a**[V/m]. Find the magnitude and direction of the dipole moment

_{ѳ}**p**.

## Homework Equations

I know that I need I need to solve for the equation:

**p**= Q

**d**, where Q is the point charge at the given point and the distance between +Q and -Q, which should be 4[m].

The other equation I know of that may lead me in the right direction is:

**E**= [(Qd)/(4∏є

_{o}r

^{3})]*(2cosѳ*

**a**+ sinѳ*

_{r}**a**).

_{ѳ}## The Attempt at a Solution

The only thing wrong with the

**E**equation above is that in my text it states that this equation is only valid when the point charges (+Q and -Q) are aligned with the z-axis. My question is what formula (or what variation of the formula above) do I use to determine what I need? It seems as if I need to solve for Q and

**d**to solve for dipole moment. I know that the

**d**vector is directed from -Q --> +Q. How would I determine the vector from this?

Thank you for all of the help in advance! I greatly appreciate it!

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