Data was collected for a 74.8 cm long solenoid and plotted on the graph below. H

Question

Data was collected for a 74.8 cm long solenoid and plotted on the graph below. How many turns N were there on this solenoid.
Hint: Find the slope of the straight line on the graph below and compare it to the formula for the magnetic field inside a solenoid. Assume that the radius of the solenoid is much smaller than the length of the solenoid, so use the formula for infinitely long solenoid to find the magnetic field.

B = mo n Io = (mo N/L) Io

Number of turns N = ______Turns

Data was collected for a 74.8 cm long solenoid and plotted on the graph below. How many turns N were there on this solenoid. Hint: Find the slope of the straight line on the graph below and compare it to the formula for the magnetic field inside a solenoid. Assume that the radius of the solenoid is much smaller than the length of the solenoid, so use the formula for infinitely long solenoid to find the magnetic field.

Explanation / Answer

Slope = 0.00126=4pi*10^-7*(N/.748)

N=750

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