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ebooksclub.org_Physics_Laborat... 2. According to theory, the electric field E for a line of charge should be proportional to 1/r where r is the distance from the line of charge. Considering the graph of the data and the value of the correlation coefficient, comment on whether or not your data for the line of charge confirms this dependence. 281 3. Examine your data for the dipole. Point A in Figure 26-4 is halfway between the positive electrode and the 16.00 V equipotential, point C is halfway between the negative electrode and 4.00 V, and B is halfway between the 8.50 V and 11.50 V equipotentials. Measure the values of Ax indicated below and calculate the E=AV/Ax at A, B, and C. EA= A AV=4.00 Ax=distance from center of + to 16.0V= B AV=3.00 Ax=distance from 8.50 to 11.50 equipotentials CAV=4.00 Ax=distance center of negative to 4.00 V= EB= Ec= 282 + A B с Figure 26-4 Point A near positive electrode, C near negative electrode, and B at center. 4. Are the results for the E field at these points A, B, and C in the preceding question consistent with what you would expect for the relative values at these points? State your reasoning. ebooksclub.org_Physics_Laborat... . Laboratory 26 Equipotentials and Electric Fields 267 281 5. According to theory, the E field in the region between the parallel plates should be constant. Calculate the E field from Equation 1 at points A, B, and C defined by Figure 26-5 below using the same process as in Question 3. Positive с B A Negative 282 Figure 26-5 Point A near negative electrode displaced from the center, C near the positive electrode displaced in the other direction, and B at center in the middle. Ea = V/m Ep = V/m Ec= V/m Are the values for the E field at points A, B, and C consistent with the theory within the experimental uncertainty? State your reasoning. 283
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(1) According to theory, the electric field E for a line of charge should be proportional to 1/r.
where r is the distance from the line of charge. Considering the value of the graph and the
correlation coefficient, comment on whether or not your data for the line of charge confirms this
dependence.
The graph of E and 1/r is a straight line, and it represents the proportional relationship between
the two. The graph signifies how the electric field grows weaker as the r becomes la...


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