This homework will be due when you come to lab the week of March 30 and 31. The

Question

This homework will be due when you come to lab the week of March 30 and 31. The data in a laboratory got mixed up. There are two sets of data, shown below. One is the magnitude of the electric field a distance r from a point charge and the other is the magnitude of the magnetic field a distance r from a current-carrying wire, but the lab technicians don't know which set of data is which. What should they do to distinguish the two sets of data from each other and determine which is the electric field data and which is the magnetic field data? Describe in words what you would do to distinguish the two sets of data. Carry out your procedure. You may attach a separate sheet of paper if you wish. The data are shown below.

Explanation / Answer

from the given data

the right side data is regarding the magnetic field and the left side date is of electric field

because we know that the magnitude of magnetic field at a distance from the current carrying wire is

   B = mue_0*I/(2pi*r)

   mue_0 = 4pi*10^-7

given 0.0001 = 4pi*10^-7*I/(2pi*0.0002)

   I = 0.1 A

and the electric field is E = kq/r^2

       33.75= 9*10^9*q/(0.02)^2

       q = 1.5*10^-12 C = 1.5 pC

so as the distance increased the field decreases

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