The difference between Figs. 20.36a and 20.36b that results in an external electric
Chapter 20, Problem 82(choose chapter or problem)
The difference between Figs. 20.36a and 20.36b that results in an external electric field in one case but not the other is that a. theres no net charge in Fig. 20.36a but there is a net charge in Fig. 20.36b. b. the total charge is greater in Fig. 20.36a. c. the charge is distributed in Fig. 20.36b so theres more negative charge to the left and more positive charge to the right.
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