This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
When the switch is closed, current flows through the coil around the iron rod, creating a magnetic field that turns the rod into an electromagnet. This electromagnet attracts the iron nail. When the switch is opened, the current stops flowing, causing the magnetic field to collapse. The iron rod loses its magnetism, and the nail drops due to gravity.