A spherical capacitor is formed by the region between two spherical conducting surfaces of radii a and b, where b>a. Assume a surface charge density on the inner spherical surface of Psa = Psar. Assume that there is free space between the two spherical surfaces and no other charges are near this spherical capacitor. Find: (a) Total charge on the inner spherical surface Q₁ (b) Surface charge density ps on the outer spherical surface Hint: Total charge on the outer surface of the outer sphere Q = -Qa Psb Psa b a

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Electric field

A physical field present around an electrically charged particle that exerts a force on all other charged particles is called an electric field. The charged particles present in the field either repel or attract. From electric charges or time-varying magnetic fields, the electric field originates. One of the manifestations of electromagnetic force which is one of the four fundamental forces present in nature are the electric fields and magnetic fields.