Charge 38nC is uniformly distributed along a thin, flexible rod of length 16cm .
ID: 1321289 • Letter: C
Question
Charge 38nC is uniformly distributed along a thin, flexible rod of length 16cm . The rod is then bent into the semicircle shown in the figure (Figure 1).
Evaluate the field strength if L = 16cm and Q = 38nC. Express your answer with the appropriate units.
Charge 38nC is uniformly distributed along a thin, flexible rod of length 16cm . The rod is then bent into the semicircle shown in the figure (Figure 1). Evaluate the field strength if L = 16cm and Q = 38nC. Express your answer with the appropriate units.Explanation / Answer
The electric field about a semicircle points to the right in the drawing and equals
E = 2*k*Q/(L*r)
...here r = L/?
So E = 2*9.0*10^9*38*10^-9/(0.16*(0.16/3.14)) = 83896.875 N/C