Question: Suppose that the Faraday concentric sphere experiment is performed in free space using a central charge at the origin, Q 1 , and with hemispheres

Suppose that the Faraday concentric sphere experiment is performed in free space using a central charge at the origin, Q1, and with hemispheres of radius a. A second charge Q2 (this time a point charge) is located at distance R from Q1, where R >> a.

(a) What is the force on the point charge before the hemispheres are assembled around Q1?

(b) What is the force on the point charge after the hemispheres are assembled but before they are discharged?

(c) What is the force on the point charge after the hemispheres are assembled and after they are discharged?

(d) Qualitatively, describe what happens as Q2 is moved toward the sphere assembly to the extent that the condition R >> a is no longer valid.

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