Beta particles and electrons share a fundamental similarity in their charge and behavior, yet they exhibit distinct characteristics crucial for various applications in devices. 

Beta particles, predominantly electrons or positrons emitted from the nucleus during radioactive decay, possess negative or positive charge, respectively. Electrons, on the other hand, are elementary particles orbiting the atomic nucleus in discrete energy levels.

In devices, such as electronic circuits, both beta particles and electrons contribute to the flow of electric current. However, their origins and behaviors differentiate them significantly. Beta particles originate from radioactive decay processes within certain materials, while electrons are intrinsic constituents of atoms.

Moreover, while both beta particles and electrons carry charge and can move through conductive materials, beta particles typically possess higher energy levels due to their origin from nuclear processes. This distinction influences their interaction with matter and their ability to penetrate materials.

In summary, while beta particles and electrons both contribute to the flow of current in devices, they differ in origin, energy levels, and interaction properties, thus influencing their respective roles and applications within technological systems.