@mashy electricity and magnetism problem 3 homewrok 1..

A flat thin non-conducting ring has an inner radius R1 and an outer radius R2 . The disk is uniformly charged with charge per unit area σ(0) .
(a) What is the electric field at the center, P, of the ring? Express your answer in terms of the following variables, if necessary, R1, R2, σ and the constant ϵ0 (if needed, enter pi for π, epsilon_0 for ϵ0, sigma for σ, R_1 for R1 .. etc).
(b)What is the magnitude of the electric field at point A which is a distance x above the point P? The line AP is perpendicular to the plane of the ring.

Question

@mashy electricity and magnetism problem 3 homewrok 1..

A flat thin non-conducting ring has an inner radius R1 and an outer radius R2 . The disk is uniformly charged with charge per unit area σ(>0) .
(a) What is the electric field at the center, P, of the ring? Express your answer in terms of the following variables, if necessary, R1, R2, σ and the constant ϵ0 (if needed, enter pi for π, epsilon_0 for ϵ0, sigma for σ, R_1 for R1 .. etc).
(b)What is the magnitude of the electric field at point A which is a distance x above the point P? The line AP is perpendicular to the plane of the ring.

anonymous · Answer

attachment

anonymous · Answer

1/(4*pi*epsilon_0*(R_1)^(3/2))

reslt of first part

 (x*(2*pi*sigma*R_1*(R_2-R_1)))/((4*pi*epsilon_0*((R_1)^2+x^2)^(3/2)))

reslt of 2nd part ..

but system gve me eror :(

anonymous · Answer

It seems you have the formula right but you seem to be getting errors in most of your calculations. Take your time, pay attention to what I called unit coefficients, i.e micro (10^-6) etc, and develop experience. Mastery of your calculator is a must.

anonymous · Answer

this is the whole problem 3 statment and the attchment which i post is the figure of this prblm so i cant able tosolve it help me

anonymous · Answer

show your derivation here.. and for the love of god.. please use the equation editor!..