# Measurements: Ohm's Law
# Prec.: U: +\-0.015V, I: +\-0.015A
# U[V] I[A]
0.15 0.14
0.25 0.22
0.40 0.36
0.50 0.48
0.60 0.53
0.70 0.64
0.75 0.65
0.80 0.74
0.90 0.81
Text-Datei
DataOhmsLaw.dat
import numpy as np
import matplotlib.pyplot as plt
#read columns from file
infile="DataOhmsLaw.dat"
U, I = np.loadtxt(infile,unpack=True)
# plot the results
fig, ax=plt.subplots(1,1)
ax.errorbar(U, I, fmt='o')
ax.set_xlabel('U')
ax.set_ylabel('I(U)')
plt.show()
Python Code
Grafik
Frage:
Gilt das Ohm'sche Gesetz ?
I=U/R = G R für
R bzw. G = const ?
Messreihe: