KEAM 2023 Physics and Chemistry Solved Paper

The rod‌PQ slides along 2 parallel rails as shown in the figure. It has a length of 20‌cm and is perpendicular to the 2 rails. It performs simple harmonic motion with amplitude 5‌cm and frequency 10‌Hz. The magnetic field is 10−4T and is directed perpendicular to the plane of paper. What is the peak induced electromagnetic force?