1. The figure at the right shows some measurements of the electric field produce
ID: 1874359 • Letter: 1
Question
1. 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. Circle the correct answers. 1. Which of the following statements are true about these charges? a) Charges A and D are positive. b) Charges B and C are positive. c) All the charges are of equal magnitude. d) You 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.)
Explanation / Answer
1) Ans: a and b
a) Charges A and D are positive.
There is repulsion from A and D. So these have charge opposite to thet of the test charge. So they are positive.
b) Charges B and C are positive.
Similarly, B and C shows attraction and thius means that they have positive charge
Option c is incorrect because the magnitudes are not equal as the lengths of the lines are not same.
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