4. A thin semicircular rod has a total charge +Q uniformly distributed along it. A negative point charge -Q is placed as shown. A test charge +q is placed at point C. (Point C is equidistant from -Q and from all points on the rod.) Let F, and FR represent the force on the test charge due to the point charge and the rod respectively. a. Is the magnitude of F greater than, less than, or equal to the magnitude of FR? Explain how you can tell. +Q
4. A thin semicircular rod has a total charge +Q uniformly distributed along it. A negative point charge -Q is placed as shown. A test charge +q is placed at point C. (Point C is equidistant from -Q and from all points on the rod.) Let F, and FR represent the force on the test charge due to the point charge and the rod respectively. a. Is the magnitude of F greater than, less than, or equal to the magnitude of FR? Explain how you can tell. +Q
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Transcribed Image Text:4. A thin semicircular rod has a total charge +Q uniformly distributed
along it. A negative point charge -Q is placed as shown. A test
charge +q is placed at point C. (Point C is equidistant from - Q and
from all points on the rod.)
Let F, and FR represent the force on the test charge due to the point
charge and the rod respectively.
a.
Is the magnitude of Fp greater than, less than, or equal to the
magnitude of FR? Explain how you can tell.
-Q
C
C. A second negative point charge -Q is placed as shown.
Is the magnitude of the net electric force on +q greater than,
less than, or equal to the magnitude of the net electric force -Q
on+q in part b? Explain.
C
S
b. Is the magnitude of the net force on +q greater than, less than, or equal to the magnitude of
Fp? Explain.
a
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