IBEW Electrical Practice Test 2026 – Complete Exam Preparation

The primary use of a circuit board is to hold electronic components and connect them. Circuit boards provide a physical platform where various electronic components, such as resistors, capacitors, and integrated circuits, can be mounted. They are made from non-conductive materials that allow for the safe arrangement of these components without short-circuiting.

Furthermore, circuit boards are designed with conductive pathways that facilitate electrical connections between the components, enabling them to work together to perform intended functions. The design and layout of a circuit board are crucial because the arrangement affects the efficiency and functionality of the entire electronic device.

The other options, while related to electrical components, do not accurately describe the main function of a circuit board. Storing electrical energy is typically the role of batteries or capacitors, insulating wires is a function of materials like rubber or plastic used in wiring, and protecting devices from surges often involves surge protectors or circuit breakers, not the core function of a circuit board itself.