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This is the movement of electrons, and electrons are the charge carriers of a circuit. Current has some amplitude(some number strength), and some direction. Note that we denote conventional current flow to be in the opposite direction of electron flow(this is just been done for many yearssimply a standard). Current in simple terms, states the number of electrons travelling per second.
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As electrons flow through conductors and into some electrical load, that circuit will dissipate some power. Recall from Physics that Power is the rate that Energy/Work is done. This makes sense, as electrons have some potential energy to move some unit charge(Thats that's the definition of electrical potential), so that means there is some work done to move that charge. Mathematically,
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Or if you want to rearrange using Ohm’s Law, using only current and resistance
P = I2 x R
P = V2 / R
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Kirchoff's Current/Voltage Laws
Recall that Electrical Current relates to the flow of charges) and Electric Potential(Voltage) relates to energy. Using this information, we can analyse circuits
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