* Kirchhoff's Current Law (KCL): This law states that the algebraic sum of currents entering a node (junction) in a circuit is equal to zero. In simpler terms, the total current flowing into a node must equal the total current flowing out of the node. This is often summarized as "what goes in, must come out."
* Ohm's Law: This law describes the relationship between voltage, current, and resistance in a circuit. It states that the voltage across a conductor is directly proportional to the current flowing through it, with the constant of proportionality being the resistance of the conductor. This is expressed mathematically as V = IR, where V is voltage, I is current, and R is resistance.
* Coulomb's Law: This law describes the electrostatic force between two point charges. It states that the force is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them. This is a fundamental law in electrostatics, which is a branch of electrical engineering dealing with static charges.
It's important to note that these are just three fundamental principles in electrical engineering. There are many other important laws and principles, each contributing to a deeper understanding of electrical circuits and systems.
Therefore, to give you a more accurate answer, please clarify what you mean by "first law." For instance, are you referring to a specific textbook or course?
