According to Ohm's law, resistance is expressed as which of the following equations?

Answer: B — R = E/I

The correct equation for expressing resistance according to Ohm's law is R = V/I. This fundamental principle in electrical engineering defines the relationship between voltage (V), current (I), and resistance (R). Ohm's law tells us that the resistance in a circuit is equal to the voltage across the circuit divided by the current flowing through it. In this equation, resistance is measured in Ohms (Ω), voltage in volts (V), and current in amperes (A). Understanding this relationship helps technicians analyze and design electrical circuits effectively. When you know the voltage and current, you can easily calculate the resistance, which is crucial for ensuring that components operate safely and within their specified limits. Other options reflect different relationships of electrical parameters but do not accurately represent how resistance is expressed according to Ohm's law.