Kaplan Nursing Entrance Practice Exam

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Prepare for the Kaplan Nursing Entrance Exam with interactive quizzes. Enhance your knowledge with multiple choice questions and detailed explanations. Ace your exam and advance your nursing career!

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Which variable is represented by "I" in the formula I = V/R?

Voltage
Resistance
Current
Power

The correct answer is: Current

In the formula I = V/R, the variable "I" represents current. This formula is derived from Ohm's Law, which defines the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. Current is the flow of electric charge and is measured in amperes (A). According to Ohm's Law, 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. This means that if the voltage increases while resistance remains constant, the current will also increase. Conversely, if the resistance increases while the voltage stays the same, the current will decrease. Understanding the role of current in this equation is crucial for analyzing electrical circuits, as it helps in determining how much current will flow for a given voltage and resistance.