An Arrangement of 3 Charges Is Drawn Showing the Field

question 73

Multiple Choice

An arrangement of 3 charges is drawn showing the field lines. The first charge has 20 lines going into it. The second charge has 30 lines going out of it. If the net charge of the arrangement is zero, what is the field line situation for the third charge?

• A) 50 lines going out
• B) 50 lines going in
• C) 10 lines going out
• D) 10 lines going in
• E) 600 lines going out to infinity

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