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As others have already mentioned, RF cannot do it, and static is not unique to phones. One possible cause of sparks is the phone's vibrator. It is essentially a little electric motor with an unbalanc …

That is easy if you are charging an insulator, but if you want to charge a metal object you need to mount it on an insulator as metals conduct electricity. Then you can charge the object. … I don't know what you think of the article you linked, but controlling gravity is something that cannot be done with electricity - if it is possible at all, and there are good reasons for thinking it's …

Power is given by the equation $$P=I*V$$where $I$ is the current and $V$ is the voltage. We also know that $$V=I*R$$ or, by swapping $I$ and $V$: $$I=V/R$$ with $R$ being the resistance. By substitut …

We know that electricity cannot pass through glass and wood There is no such thing as a perfect insulator. …

Hanging from a power line you should be as safe as a bird. The voltage difference is between the lines (e.g. in a 3-phase system) and between the line and ground. This voltage difference exists acros …

The switch really has 2 positions: on and off. However, when you move the switch very slowly, it may leave the closed position slowly. When the switch is just barely open, the field may cause the air …

As the battery forces charge through the resistor, indeed that energy is converted into heat. An ideal battery has enough power so that it can supply the current without any voltage drop. With a rea …

This is in addition to the high & low energies zhermes mentioned. At radio frequencies we can extract energy from the radiation with a tuned circuit and a rectifier. Think of a crystal radio set: it …

Most electricity generators generate AC. The reason for preferring AC is that, historically, it is easier change voltage with AC: all you need is a transformer. …

Electricity flows whenever 2 objects at different potentials touch each other, regardless of what else the objects are connected to. …

Assume that there is an ideal voltage source The problem is that such a voltage source does not exist. Every real-life voltage source has an internal resistance. Because of that (and possibly for …

I can see 2 possible reasons why your phone does not detect a magnetic field. First, a magnetic field is generated when current flows. A simple wire carries no current. So, unless the wire is part of …

Yes it would work as you expect. There is one problem though: most good thermal conductors are also good electrical conductors. Copper is among the better thermal conductors. Have a look at this cha …

No matter how you connect them, the high voltage source will not be able to provide the 50A. If it could you would have 50A @ 30kV, i.e a 1.5 MW power souce! The best you can hope for is the availab …

The electrocytes are like tiny batteries. Like batteries, if you stack them so the positive terminal of one is connected to the negative terminal of the next one, their voltages add up. Hence, if you …