Capacitance of a Sphere Calculator

In the field of electromagnetism, a branch of Physics, the capacitance of a sphere is an essential concept. It relates to the amount of electric charge a spherical object can store under an electric potential. This tutorial delves into the formula for the capacitance of a sphere, its creator, real-world applications, the key contributors to the field, and some interesting facts.

Capacitance of a Spherical Capacitor based on Radius Calculator Calculator
Capacitance of a Sphere Calculator Results
Capacitance of Sphere = F

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Example Formula

The formula for calculating the capacitance (C) of an isolated sphere with radius (r) is given by:

C = 4πε0r


  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. r: is the Radius of the sphere in meters (m)

Who Wrote/Refined the Formula

Although it's difficult to attribute the formulation of the capacitance of a sphere to a specific individual, it is a result of the fundamental principles laid out in the broader discipline of electromagnetism. A key contributor to the field was James Clerk Maxwell, a Scottish scientist in the 19th century, whose formulation of Maxwell's equations forms the basis for modern electromagnetism.

Real Life Application

Understanding the capacitance of a sphere is critical in various fields, including electronics and power transmission. For instance, it's crucial in the design and manufacturing of spherical capacitors used in many electronic devices. Also, understanding capacitance is vital in power transmission lines where spherical conductors (though not perfectly spherical) are used, and knowledge of their potential to store and distribute charge is essential.

Key Individuals in the Discipline

James Clerk Maxwell, a key contributor to the field of electromagnetism, played a significant role in shaping our understanding of electric charge and capacitance. He formulated Maxwell's equations in the 19th century, providing a theoretical framework that still holds in modern physics. While he didn't specifically formulate the capacitance of a sphere, his contributions laid the groundwork for such calculations.

Interesting Facts

  1. Capacitance is a fundamental concept that enables the functioning of many everyday devices, from radios and televisions to smartphones and computers. The concept of capacitance is instrumental in the design and operation of these devices.
  2. The development of capacitors, which heavily relies on the concept of capacitance, has played a significant role in the technological revolution, enabling the miniaturization of electronic devices and advancements in telecommunications.
  3. The sphere's simple geometric shape makes it an excellent model for many real-world applications, even though many conductors in use today are not perfectly spherical.


Understanding the capacitance of a sphere provides a fundamental insight into how electric charge is stored and manipulated in various systems, highlighting the significance of electromagnetism in modern technology and electronics. By exploring this concept, one can gain a deeper appreciation of the underlying principles that enable our technological world.

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