Three electric charges are arranged on a straight line as shown in the figure. S

Question

Three electric charges are arranged on a straight line as shown in the figure. Select True or False for the following statements. True: If Q1 is negative, Q2 is negative and Q3 is positive, then Q2 MUST feel a net force to the right. True: If Q1 is positive, Q2 is negative and Q3 is positive, then Q2 MIGHT feel a net force to the right. False: If Q1 is positive, Q2 is negative and Q3 is positive, then Q2 MUST feel a net force to the right. False: If Q1 is positive, Q2 is negative and Q3 is negative, then Q2 MUST feel a net force to the right. You are correct. Previous Tries In the above figure, R 1.68 m, Q1 2.20x10-6 c, Q2 -Q1 and Q3 -Q1. Calculate the total force on Q2 Give your answer with a positive number for a force directed to the right. 3.188N Use Coulomb's Law and superposition of electric forces

Explanation / Answer

Here ,

for R = 1.68 m

Q1 =2.2 *10^-6 C

as the force on Q2 due to Q1 qnd Q3 will be in same direction

total force on Q2 = F1 + F3

total force on Q2 = k * Q2 *(Q1/R^2 + Q3/R^2)

total force on Q2 = - 9*10^9 * 2.2 *10^-6 * ( 2.2 *10^-6/1.68^2 + 2.2 *10^-6/1.68^2)

total force on Q2 = - 0.0367 N

the net force on Q2 is - 0.0367 N

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