TExES Science 7-12 (236) Practice Test 2025 – Comprehensive All-In-One Guide to Exam Success!

According to Ohm's Law, the electrical current (I) in a circuit is determined by the relationship between voltage (V) and resistance (R) within the circuit. This law is commonly expressed with the formula \( I = \frac{V}{R} \), indicating that the amount of current flowing through the circuit is directly proportional to the voltage applied and inversely proportional to the resistance involved. This fundamental principle governs how electrical circuits function, allowing for predictions about current flow based on changes to voltage or resistance.

In practical terms, if the voltage increases while resistance remains constant, the current will increase; conversely, if the resistance increases while voltage is constant, the current will decrease. This direct dependence on voltage and resistance is critical for understanding various electrical components and circuits in general. Other factors, while they may influence the behavior of a circuit, do not directly relate to the fundamental relationship defined by Ohm's Law.