Circuit problems refer to issues that arise in electrical circuits, which can affect their performance and safety. These problems can include short circuits, where unintended paths allow current to flow, and open circuits, where a break prevents current from flowing. Identifying and resolving these issues is crucial for ensuring that devices function properly. Common causes of circuit problems include faulty components, poor connections, and overloads. Tools like multimeters can help diagnose these issues by measuring voltage, current, and resistance. Understanding basic circuit theory, including concepts like Ohm's Law and Kirchhoff's Laws, is essential for troubleshooting effectively.