An intense magnetic field generated by fluctuating electricity disrupts all electric and electronic equipment within a target area for an indefinite period.
Electricity and magnetism are the bases of E-Bombs. Magnetism can generate electricity and electric currents generate magnetic waves. An E-Bomb generates powerful magnetic field that cripples all electric and electronic equipment within its field of action. The latter would depend on the height from which an E-Bomb is dropped. An E-Bomb detonated by a missile high above the earth would cripple an entire country. One dropped closer to earth would affect a small area such as a specific target.
One way of generating a huge magnetic force is to detonate a nuclear bomb. Such a bomb could be burst about 25 miles above earth, so that the country below would be crippled by destruction of all electric and electronic systems. The radiation effects would be mitigated in such an event so that these would be little direct loss of life or damage to civil construction. A superpower could deliver such a bomb. Small outfits could use simple microwave technology instead. A special microwave oven, similar to that used in most modern homes, but on a much larger scale, could generate waves to destroy electrical and electronic systems. This would not cripple an entire country but could be used to isolate parts of cities and some military instillations. The microwave could operate from a missile or an aircraft, so an enemy could work it from a remote location.
A Flux Compressor Generator (FCG) Bomb is another cheap and relatively easy way of using magnetic waves to cripple a small area such as a part of a city, or even an entire city. An FCG consists of a metal cylinder filled with explosive. A coiled wire surrounds the cylinder. A layer of air separates the wire and cylinder from each other. The coil is connected to a power source. The entire assembly is placed in a secure container. A current passed through the coil creates a magnetic field. The explosive is burst through a fuse. The explosion disturbs the electric current flowing through the coil and this in turn creates an enormous magnetic field. An FCG can cause significant, long lasting damage, though on a limited geographical scale.
We take electricity for granted and it is difficult to imagine living without it. Telephones, Television, radio, computers, ignition systems of automobiles, navigation systems of aircraft and ships and many other conveniences on which we depend, would stop working instantly if we were subject to an E-Bomb attack. Equipment would be damaged beyond repair, so unlike a sudden and brief power outage, people in the affected area would be isolated and transported in to the middle ages for an indefinite period. We would need to use a manual postage system and handwritten notes to communicate with others at remote locations. The Government, police, military and bureaucracy would all be paralyzed. Underground bunkers would be unusable as ventilation and communication systems would stop working. The good part is that buildings would be standing and most people would not be directly harmed in a physical sense. There is a limited possibility of protecting some crucial equipment such as generators and computers in physical shields known as Faraday cages, but this cannot be done on an extensive scale and power inputs and outputs would continue to be vulnerable.