Q1. An iron bolt of mass 65.0 g hangs from a string 32.0 cm long. The top end of the string is fixed. Without touching it, the magnet attracts the bolt so that it remains stationary, displaced horizontally 28.0 cm to the right from the earlier vertical line of the string.
Find the tension in the string.
Find the magnetic force on the bolt.
Q2. The primary coil of a transformer has 237 turns; secondary coil has 2100 turns. An alternating current is sent through the primary coil. The emf in the primary is 25 V. What is the emf amplitude in secondary?