2.-For an EMP you'd need a huge peak power (think megawatts), and therefore a huge peak current. The United States most likely has EMP weapons in its arsenal, but it's not clear in what form.
Most likely, this type of weapon would affect a relatively small area -- nothing on the order of a nuclear EMP attack -- but it could do some serious damage.In the next section, we'll look at some possible effects of an EMP attack.
An EMP (or Electromagnetic Pulse) has the power to knock out all electronic devices within its range.
The thicker gauge copper wire you use in this experiment, the more powerful your electromagnetic pulse will be. A grounded platform, like a tree stump or plastic table, is an ideal testing surface for your EMP emitter.
Many office supply stores have affordable electronic calculators that you can use to test your EMP. Electromagnetic fields are, in most cases, invisible to the eye.[10] If you don't have a test object, even if you have successfully created an EMP, you may not know it. The nature of the EMP field you are creating will affect any electronics, even those that are switched off.
If your device has successfully worked, your test object, and any other electronics caught in your EMP field, will not turn on. The size of the copper wire and length of the coil will determine the strength and radius of the electromagnetic pulse.

How Bombs WorkBombs come in many different shapes and sizes -- as small as a grenade to as huge as a thermonuclear warhead.
To create a simple electromagnetic pulse, you will need a disposable camera, copper wire, rubber gloves, solder and soldering tools, and an iron rod. Depending on the materials you have used, the effective range of your EMP shouldn't be more than a few feet in any direction.
Since the electromagnetic pulse field will only affect electronics, you may want to buy an inexpensive electronic device from your local electronics store. You will need electricity to re-charge your capacitor, which will then provide the current to your electromagnetic coil and create your EMP. You can do this by removing the wires from the electromagnetic coil, allowing the current from the battery to feed into the capacitor, and then with an insulated manipulator (like rubber gloves or plastic tongs), reattach the wires of your coil to your capacitor.
By activating the flash of your camera, you will release the stored electricity in it, which will surge through your electromagnetic coil and create your EMP. If you have chosen a calculator as your test object, after activating your capacitor, if your EMP has worked, the calculator will not turn on.
The construction of your handheld EMP device will go most smoothly if you have all the tools and components required for construction on hand. You walkie-talkie antenna will serve as the stock onto which you fix your electromagnetic coil and camera circuit board. Since current will be running through your coil to create your EMP, it's a good idea to double insulate your antenna by putting another small piece of cardboard between your coil and the antenna.

Make sure you have chosen a location far enough away from electronics that you don't inadvertently do harm.
For safety, start with a small device to test the effectiveness of your design before creating a larger, more powerful pulse.
Any damage you cause to these devices through your EMP could result in legal repercussions. If your electronic device ceases function after your EMP, you have successfully created an electromagnetic pulse. Depending on the materials and technique you used in the construction of your device, the range of your EMP field may include only the immediate vicinity of your coil, or it may reach up to several feet around the coil.
Grasping your EMP device by the insulated base of the antenna, like a Ghostbuster Neutrona Wand, hold your electromagnetic coil toward your test object and flick your switch to the "On" position.
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