What is another name for the modulus of elasticity (E)?

The modulus of elasticity, commonly referred to as Young's Modulus, is a fundamental property of materials that quantifies their stiffness. Specifically, Young's Modulus is defined as the ratio of stress (which is the force applied per unit area) to strain (which is the deformation experienced by the material in response to that stress).

This relationship is central to understanding how materials respond under load. Stress and strain are both crucial concepts in material science, and Young's Modulus provides insight into a material's ability to return to its original shape after the load is removed, which is critical in engineering applications.

In this context, the correct answer accurately represents Young's Modulus as it clearly states that E is calculated by dividing stress by strain, highlighting the mathematical relationship that defines the modulus of elasticity. Understanding this helps engineers and power engineers select appropriate materials for specific applications based on their mechanical properties.