Two conducting concentric spherical shells have radii a = 0.19 m and b = 0.215 m. a. Express the capacitance of the two concentric shells in terms of radii a and b and the Coulomb constant k. b. Calculate the numerical value of the capacitance in F. c. Express the capacitance C through the potential difference ΔV across the capacitor and charge Q. d. If the charge in the inner sphere is +Q = 3 μC, the outer sphere –Q = -3 μC, calculate the electric potential difference ΔV between the outside and the inside conductors in V.
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Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.
Electrostatic Potential and Capacitance
An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.
Two
a. Express the capacitance of the two concentric shells in terms of radii a and b and the Coulomb constant k.
b. Calculate the numerical value of the capacitance in F.
c. Express the capacitance C through the potential difference ΔV across the capacitor and charge Q.
d. If the charge in the inner sphere is +Q = 3 μC, the outer sphere –Q = -3 μC, calculate the electric potential difference ΔV between the outside and the inside conductors in V.
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