How do electronic devices actually use the electricity/power?

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What makes the electric current streaming through electronic devices actually being used and convert it into something else like movement, light etc? What makes it being consumed by the device?

If electric current is a solid matter, and solid matter being consumed, it wont just disappear without a trace, it would create a waste right? In this case its probably heat.

I have zero knowledge about electricity and this just struck my brain.

I hope you guys understand what i am trying to say

In: Engineering