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course course_year question_number tags title year
Electromagnetism
IB
6
IB
2020
Electromagnetism
Paper 2, Section I, D
2020

Two concentric spherical shells with radii $R$ and $2 R$ carry fixed, uniformly distributed charges $Q_{1}$ and $Q_{2}$ respectively. Find the electric field and electric potential at all points in space. Calculate the total energy of the electric field.