Equipment: 1 solenoid 1 power supply 1 magnetic field sensor 1 computer interface 1 computer software Investigation 2 The magnetic eld of a solenoid In this section, we will measure the magnetic field of a solenoid and use it to determine ' the number of turns of the solenoid. Investigation 2.1 The magnetic eld of a solenoid 3. Discuss the strength of the magnetic field inside a solenoid. Is it constant? b. If you were to measure the magnetic field inside a solenoid, would it be uniform everywhere? c. Is the field inside the solenoid approximately uniform in some region? (1. Test your predictions with the magnetic field sensor. 1n\"! Investigation 2.2 Measuring the magnetic field of a solenoid Theoretically, the magnetic field near the center of a solenoid is B = Moni where I is the current and n is the number of turns per unit length. We are going to determine the number of turns per unit length of the solenoid by measuring the magnetic field in the center of the solenoid. a. Use the magnetic field sensor to measure the field inside the solenoid at your table for 5-6 values of the current through the solenoid. Keep the current below 1.0A as much as possible. Record your data in the table below. Current (A) Magnetic field (T) X 100 0.04 2.000026 0.09 0.00005S 0. 1 2 2. 0 00 077 0. 17 2.0 001005 0. 23 0. 0 0 0142 a. In Excel, plot your data and determine the n, the number of turns per unit length, of the solenoid. Describe your method for determining n and show your work clearly in the space below. 108Summary. Summarize how you determined the magnitude and direction of the magnetic field due to a current-carrying wire in a few sentences in the space below. 109