Kaplan Nursing Entrance Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Kaplan Nursing Entrance Exam with our comprehensive quiz. Utilize flashcards and multiple choice questions, each with detailed hints and explanations, to increase your readiness and confidence for the test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the SI unit of electrical resistance?

Volt
Ampere
Ohm
Henry

The correct answer is: Ohm

The SI unit of electrical resistance is ohm. This unit measures how much a material resists the flow of electric current. The higher the resistance, the less current flows for a given voltage applied. This relationship is defined by Ohm's Law, which states that voltage (in volts) equals current (in amperes) times resistance (in ohms). Essentially, the ohm quantifies the capacity of a conductor to resist the flow of electricity; thus, it's a fundamental concept in understanding electrical circuits. Other options refer to different concepts. The volt is the unit of electrical potential, measuring the potential difference that drives current flow. The ampere measures the flow of electric charge, equivalent to one coulomb of charge per second. The henry is the unit of inductance, which is a property related to how an electrical conductor reacts to a change in current. Understanding these distinctions helps clarify the role that each unit plays in the broader context of electrical engineering and physics.