What is defined as energy stored in an object?

The definition of energy stored in an object aligns with the concept of potential energy. This type of energy is associated with the position or configuration of an object within a given system. For example, an object elevated above the ground possesses gravitational potential energy because of its position relative to the Earth's surface. This energy can be converted to kinetic energy when the object falls, illustrating how potential energy can be transformed into other forms of energy.

In contrast, kinetic energy refers to the energy of motion, which does not represent stored energy but rather energy in use. Mechanical energy is a broader category that includes both kinetic and potential energy, thus not specifically identifying stored energy alone. Circuit energy typically refers to energy within an electrical circuit, which does not pertain to the mechanical storage of energy. Therefore, potential energy is the most accurate choice for the energy that is specifically stored in an object.