(a) At any of the eight marked spots around a positive point charge 
q, a positive test charge would experience a repulsive force directed radially outward. (b) The electric field lines are directed radially outward from a positive point charge 
q.
Figure 18.23  (a) At any of the eight marked spots around a positive point charge + q, a positive test charge would experience a repulsive force directed radially outward. (b) The electric field lines are directed radially outward from a positive point charge + q.


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