What is the Ohm's Law equation?

What is the Ohm's Law equation?

• A. P = V × I
• B. Q = I × t
• C. V = R ÷ I
• D. V = I × R

Answer: (D)

Ohm's Law shows how voltage, current, and resistance relate in a simple circuit. It states that the voltage across a component equals the current through it multiplied by its resistance: V = I × R. This means you can find any one of the three if you know the other two. For example, with a 5-ohm resistor carrying 2 amperes, the voltage drop is V = 2 A × 5 Ω = 10 V. If the voltage is 10 V across that resistor, the current is I = V / R = 10 V / 5 Ω = 2 A. The other options refer to different concepts: P = V × I is power, Q = I × t is charge, and V = R ÷ I isn’t a correct form of Ohm’s law.

Ohm's Law shows how voltage, current, and resistance relate in a simple circuit. It states that the voltage across a component equals the current through it multiplied by its resistance: V = I × R. This means you can find any one of the three if you know the other two. For example, with a 5-ohm resistor carrying 2 amperes, the voltage drop is V = 2 A × 5 Ω = 10 V. If the voltage is 10 V across that resistor, the current is I = V / R = 10 V / 5 Ω = 2 A. The other options refer to different concepts: P = V × I is power, Q = I × t is charge, and V = R ÷ I isn’t a correct form of Ohm’s law.