In electrical terms, what does resistance measure?

Resistance measures the opposition to current flow in an electrical circuit. It quantifies how much a material resists the movement of electric charges, which is essential for understanding how electrical systems function. When a circuit has a high resistance, it impedes the flow of current, while low resistance allows current to pass more freely. This concept is fundamental in circuit design and analysis, allowing engineers and technicians to predict how much current will flow under different conditions based on the resistance in the circuit.

The other choices relate to different electrical parameters. The strength of the current pertains to the amount of electric charge flowing through a circuit, measured in amperes. Voltage refers to the electric potential difference between two points, influencing how much current flows through a given resistance. Energy consumption is associated with the total energy used by electrical devices over time, which relates to power and efficiency rather than the fundamental concept of resistance itself. Understanding resistance is crucial for effectively managing and troubleshooting electrical systems.