Unlocking the Power of Ohm's Law: Understanding Electric Circuits

How does Ohm's Law help us understand the relationship between current, voltage, and resistance in an electric circuit?

If a 1.5 V battery is connected to a small light bulb with a resistance of 3.5 ohms, what is the current in the bulb?

Understanding Ohm's Law for Electric Circuits

Ohm's Law is a fundamental principle in electricity that provides a mathematical relationship between current, voltage, and resistance in an electric circuit. It states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance.

In mathematical terms, Ohm's Law can be expressed as: I = V / R, where I represents current in amperes, V is voltage in volts, and R is resistance in ohms.

When applying Ohm's Law to the scenario of a 1.5 V battery connected to a light bulb with a resistance of 3.5 ohms, we can calculate the current flowing through the bulb.

By substituting the given values into the formula: I = 1.5 V / 3.5 ohms = 0.4285 A ≈ 0.43 A, we find that the current in the bulb is approximately 0.43 amperes.

Understanding Ohm's Law allows us to analyze and predict the behavior of electric circuits, enabling us to design and troubleshoot electrical systems effectively.