How can two objects affect each other’s energy level without being in contact with one another simply by the virtue of their electric charge?
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If you’re talking about wireless charging, that’s because electric currents can change the local magnetic field. Additionally, and conversely, a changing magnetic field can induce a current in a circuit. So a wireless charger gets a current run through it from the power outlet. This changes the magnetic field around it in a certain way. Your phone or other mobile device has an electric circuit in it that gets a electric current induced in it by the changing magnetic field. The current is routed into the battery of the device, charging it.
There’s no such thing as ‘in contact’. All you’re observing is electromagnetism changing the energy levels of two objects over a short distance rather than a long distance.
You might equally ask why when you toss a ball up in the air it comes back to the ground despite the fact that there’s really nothing connecting the ball and the ground.
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