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This is a question i've been struggling with in AP physics 2:

Suppose you are given an electric

field, but the charges that produce the field are hidden. If a positive test charge brought into the region shows that all the field lines point into the hidden region, what can you say about the sign of the charge in that region? How do you know?

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the Electric Charge present... View the full answer

electric field 4 (ortegalugo).png

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