Kaplan Nursing Entrance Practice Exam

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What does a unit of resistance like ohm resemble?

  1. A spiral

  2. A straight line

  3. A horseshoe

  4. A triangle

The correct answer is: A horseshoe

A unit of resistance, specifically the ohm, is often represented by the symbol that resembles a horseshoe. In electrical engineering and physics, the symbol for ohm is a stylized version of a horseshoe shape, reflecting the unit's association with resistance in electrical circuits. The horseshoe shape captures the concept of impediment to the flow of electric current. In contrast, other shapes like a spiral, straight line, or triangle do not have any established correlation with the unit of resistance, making them less suitable representations. The horseshoe, however, is widely recognized within the context of electrical terminology, enhancing the clarity and communication among professionals in the field.

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