The figure at the right shows some measurements of the electric field produced b

Question

The figure at the right shows some measurements of the electric field produced by four charges (A, B, C, and D) and measured by a negative test charge. Choose all the correct answers.

The figure at the right shows some measurements of the electric field produced by four charges (A, B, C, and D) and measured by a negative test charge. Choose all the correct answers. 1. Which of the following statements are true about these charges? Charges A and D are positive OCharges B and C are positive. All the charges are of equal magnitude. OYou can't conclude anything about the charges. Explain your reasoning. 2. Which of the following graphs represents the electric potential along the dotted line (x axis)? (Choose N if none of these graphs are correct.) Explain your reasoning.

Explanation / Answer

1) charges B and C are positive
as negative charge test means at positive charge field lines toward the charge, from the figure field lines are toward the charge of B and C so they are positive wich also means that A and D are negative.
As field lines are of different length (magnitude) so we can't say that they are of equal charges.

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