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1. a. Resume activity 3 with the 200 turns solenoid which has the same length as that of 400 turns solenoid. In this case, n = N/L = 480 turns per meter. Adjust to obtain | = 1.3 A. b. Place the zero of the teslameter probe in front of the red marck. Record B2(0) then move the probe and record the value of B. Record the results in this table x (cm) 0 2 4 8 9 10 12 14 BI (mT) 8780 0. 790 0.777 0 . 775 0.770 0 . 76 2 16 17 18 19 21 22 23 0. 741 0.722 0. 6p6 0. 622 0. 371 0- 224 0.139