The upper limit of EM-field strength is the maximum strength that an electromagnetic field can reach. It is determined by the properties of the medium in which the field exists and the energy that is being transferred through the field.
The upper limit of EM-field strength is calculated using the formula E = kq/r^2, where E is the strength of the field, k is the Coulomb constant, q is the charge of the source, and r is the distance from the source. This formula is known as Coulomb's law.
The upper limit of EM-field strength can be affected by several factors, including the distance from the source, the size and charge of the source, and the properties of the medium through which the field is passing. Additionally, the presence of other fields and external influences can also impact the upper limit of EM-field strength.
There are many examples of EM-fields with high upper limits of strength, including the electric fields produced by lightning strikes, the magnetic fields of neodymium magnets, and the electromagnetic fields generated by high-voltage power lines.
Understanding the upper limit of EM-field strength is important for a variety of reasons. It helps us to design and build efficient electrical and electronic devices, and to protect ourselves and our equipment from the potential dangers of high-strength EM-fields. Additionally, understanding the upper limit of EM-field strength is crucial for many areas of research and technology, such as telecommunications, medical imaging, and space exploration.