Need to find force on a charge due to an electric field strenght, pls help

AI Thread Summary
To find the force on a charge due to an electric field strength vector, the relationship F=qE applies universally, regardless of the source of the electric field. The electric field strength vector can be derived from the electric potential field using the equation E=-(grad)V. The user expresses confusion about applying this equation in the context of a vector field rather than a point charge. Clarification is sought on how to proceed from this point. Understanding that the force equation holds true for any electric field is essential for solving the problem.
martinpeim16
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i have a problem asking about a Electric potential field(V), form which i have to find the electric field strength vector(E).

E=-(grad)V

After i did this, it asks me to find the force on a charge at a point P.

i know F=qE but this is when i have a E field due to a another charge on space, but here i have a vector field.

I need help on knowing what i can do next coz I am stuck here.

Thanks in advance
 
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martinpeim16 said:
i know F=qE but this is when i have a E field due to a another charge on space, but here i have a vector field.
That equation is true no matter what E is due to.
Is this a homework problem?
 

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