Capacitance of Concentric Spheres Calculator

Within the field of Physics, particularly electrostatics and electrical engineering, the concept of capacitance of concentric spheres holds significant importance. The capacitance of an object refers to its ability to store electrical charge. In this tutorial, we will discuss the associated calculations and formulas for the capacitance of concentric spheres, its origin, its applications in real-world scenarios, significant contributors to the field, and some intriguing facts.

Capacitance Between Two Concentric Spheres Calculator Calculator
Capacitance of Concentric Spheres Calculator Results
Capacitance of Concentric Spheres = F

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Example Formula

The formula to calculate the capacitance (C) of a spherical capacitor formed by two concentric spheres of radii a and b (b > a) in a vacuum or air is:

C = 4πε0ab/(b - a)


  1. C: is the Capacitance measured in Farads (F)
  2. π: is the mathematical constant Pi
  3. ε0: is the Permittivity of free space (~8.854 x 10-12 F/m)
  4. a: is the Radius of the inner sphere in meters (m)
  5. b: is the Radius of the outer sphere in meters (m)

Who Wrote/Refined the Formula

While no single individual is credited with the development of this formula, it's a direct application of fundamental laws of electrostatics, which have been refined over centuries by numerous scientists. Michael Faraday's pioneering work on capacitors and James Clerk Maxwelll's contributions to the theory of electromagnetism greatly shaped our understanding of these concepts.

Real Life Application

The concept of capacitance of concentric spheres has numerous real-world applications. It is fundamental to the design and operation of spherical capacitors and Van de Graaff generators, which are used in a variety of fields including scientific research, medical imaging, and even amusement parks for static electricity demonstrations.

Key Individuals in the Discipline

Michael Faraday and James Clerk Maxwell are two key figures who have made significant contributions in this field. Faraday's experiments laid the groundwork for the concept of electric capacitance, while Maxwell's equations provided a comprehensive mathematical framework for electromagnetism, incorporating the principles of electrostatics, current flow, and magnetic fields.

Interesting Facts

  1. Capacitance plays a crucial role in many everyday devices beyond just capacitors. For instance, touch screens on smartphones function based on the principle of capacitance.
  2. Understanding capacitance has greatly impacted humanity's development of technology, enabling everything from radio to modern computer circuits.
  3. The theory of capacitance and its mathematical understanding helped refine the design of many technologies, advancing the field of electrical engineering significantly.


The study of the capacitance of concentric spheres is a core aspect of electrostatics and electrical engineering. It's not just an academic concept; it has real-world implications that have shaped our modern technological landscape. By understanding these principles, one can gain a deeper insight into the world of physics and our technology-dependent society.

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