# Electric Fields Physics | Get Solution Now

a) Without doing any calculation, write down the approximate electric field (magnitude &direction) a distance d from the origin, assuming that d>>a. Make sure to justify your answer.b) Calculate the electric potential at a point P on the z axis, a distance z from the center of the object. Assume that the potential at infinity is zero. You dont need to evaluate any integrals you run into. Just leave the answer in integral form.c) Calculate the electric field (magnitude and direction) at a point P on the z axis, a distance z from the center of the ring. You dont need to evaluate any integrals you run into. Just leave the answer in integral form.d) Take the limit z>>a to show that your electric field reproduces your answer from part (a). [Hint: It helps to write your expression in terms of the small dimensionless parameter a/z.]

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