Three point charges and Q_1, Q_2, and O_3 are arranged to form an equilateral tr

Question

Three point charges and Q_1, Q_2, and O_3 are arranged to form an equilateral triangle as shown in the figure below. The signs of these charges are unknown. (a) A test charge Q_test is now placed at point A. If the net force on the test charge is zero, what might be the signs of Q_1, Q_2, and Q_3? Pick the correct option(s). (Select all that apply.) (b) Repeat part (a), but now the test charge is placed at point B. (Select all that apply) (c) Repeat part (a) again, but with the test charge at point C. (Select all that apply.) Q_1, Q_2, and Q_3 are all positive. Q_1, Q_2, and Q_3 are all negative. Q-01 and Q_2 are positive, and Q_3 is negative. Q_1 is positive, and Q_2 and Q_3 are negative Q_1 is positive, Q_2 is negative, and Q_3 is positive. Q_1 is negative, and Q_2 and Q_3 are positive.

Explanation / Answer

Correct options are -

a) Q1 is positive , Q2 and Q3 are negative .

     Q1 is negative , Q2 and Q3 are positive .

b) Q1 , Q2 , Q3 are all positive .

     Q1 , Q2 , Q3 are all negative .

c)   Q1 is positive , Q2 and Q3 are negative .

     Q1 is negative , Q2 and Q3 are positive .

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