An electric current has several effects, including a heating effect and a magnetic effect. Which option correctly identifies the effect used by a safety fuse and its main function?
Effect used: heating effect; Main function: breaking a circuit when the current exceeds a safe limit.
Effect used: heating effect; Main function: allowing a small current to control a much larger current.
Effect used: magnetic effect; Main function: breaking a circuit when the current exceeds a safe limit.
Effect used: magnetic effect; Main function: allowing a small current to control a much larger current.
135 exam-style questions on CIE IGCSE Physics Electrical safety, covering Electrical safety. Each one has a worked solution and a mark scheme showing where the marks go.