A voltmeter will display the voltage electricity and an Ameter will show the flow of electricity. We can install data recorder. Is this what you wanted to ask?
No, lets say, we pointed our smart phone camera at a set of low or high current wires and seen a visual of the flow of electricity, identified as a color of light if it's hot or not basically... Maybe could look like el wire but only when it was on so to speak...
I believe there are devices like, speed guns and heat guns. You point them towards a moving car, you can record the speed, you point the gun towards a furnace, a heat gun can record the temperature.
The electricity can be checked by devices, like a clamp, you can record ampere, volt in any wire.
A multi meter can check voltage, amp and resistance.
In any cell phone, mobile phone, the flow of electricity is different at different points
The only way you can do that is by using very thin wires and very high currents. The wires will heat up, and then you can use a thermal camera to see where current is flowing. It might look like a far-fetched solution, but I've used it to find shorts on power lines in densely populated circuit boards.
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shahjee
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