Read the following experiment carefully to answer the questions below:
Merlyn takes a coil of wire and wraps it around an iron nail to make an electromagnet. She connects the coil to a cell and places a magnetic compass near its ends to observe the deflection. The experiment explores how changes in the coil, current, or core affect the compass needle.
1. She increases the number of turns of the coil while keeping the same iron nail and cell. What will happen to the deflection of the compass?
2. What is the reason for the change in deflection observed?