Ohm's Law

Ohm's Law is a fundamental principle in electronics and electrical circuits, defining the relationship between voltage, current, and resistance. The law is expressed by the formula:

1. Voltage (V)(volt, V): It's the potential difference that drives the current through the circuit.
   (measured in volts, V)
2. Para calcular a Tensão: (V) [V = I x R] → V(volt) = I(ampere) x R(Ω)
3. Current (I)(ampere, A): It's the flow of electric charge through the circuit.
   
4. Resistance (R)(ohm, Ω): It's the opposition to the flow of current in the circuit
   .(measured in Ohms, Ω)
   Calculate a Resistence, (R)
   [R = V ÷ I] → R(Ω) = V(volt) ÷ I(ampere)
   

In a real-world scenario, Ohm's Law helps in designing an reparing circuits by allowing the necessary values of resistors, the voltage required to power a circuit, or the current flowing through a circuit. For example, if you're designing a circuit with a known resistance, you can use Ohm's Law to determine the required voltage to achieve a desired current flow.