What is the mathematical expression for Ohm's law?

What is the mathematical expression for Ohm's law?

• A. V = IR
• B. I = VR
• C. R = IV
• D. P = RI

Answer: (A)

Ohm's law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It establishes that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. Mathematically, this relationship is succinctly expressed as V = IR, where V is the voltage in volts, I is the current in amperes, and R is the resistance in ohms. This fundamental principle is crucial in circuit analysis and design because it allows engineers to calculate how much current will flow for a given voltage and resistance, or vice versa. Understanding Ohm's law is essential for solving complex circuit problems and designing effective electrical systems.

Ohm's law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It establishes that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. Mathematically, this relationship is succinctly expressed as V = IR, where V is the voltage in volts, I is the current in amperes, and R is the resistance in ohms.

This fundamental principle is crucial in circuit analysis and design because it allows engineers to calculate how much current will flow for a given voltage and resistance, or vice versa. Understanding Ohm's law is essential for solving complex circuit problems and designing effective electrical systems.