Objective of the experiment: To study the magnetic field produced by electric current in coils with different numbers of turns.

Theory: When electric current flows through a coil, a magnetic field is generated. The magnetic field strength depends on the number of turns in the coil. More turns result in a stronger magnetic field at the center. The direction of the magnetic field can be determined using the right-hand rule.

Procedure:

1. Connect coil AA to a power supply.

2. Supply a current of 1 A to the coil.

3. Use the magnetic field probe at the center of the coil.

4. Repeat steps 1-3 by changing to coil AB and coil AC.

5. Compare the magnetic field strengths for each coil and discuss the results.