Question Part Points Submissions Used (a) Two point charges totaling 7.50 µC exe

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Question Part Points Submissions Used (a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.811 m. What is the charge on each?
smallest charge
µC
largest charge
µC

(b) What is the charge on each if the force is attractive?
smallest charge
µC
largest charge
µC

• 
  

Question Part Points Submissions Used (a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.811 m. What is the charge on each?
smallest charge
µC
largest charge
µC

(b) What is the charge on each if the force is attractive?
smallest charge
µC
largest charge
µC

• 
  

Question Part Points Submissions Used (a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.811 m. What is the charge on each?
smallest charge
µC
largest charge
µC

(b) What is the charge on each if the force is attractive?
smallest charge
µC
largest charge
µC

• 
  

Question Part Points Submissions Used Question Part Points Submissions Used Question Part Points Submissions Used Question Part Points Submissions Used Question Part Points Submissions Used (a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.811 m. What is the charge on each?
smallest charge
µC
largest charge
µC

(b) What is the charge on each if the force is attractive?
smallest charge
µC
largest charge
µC

• 
  

(a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.811 m. What is the charge on each?
smallest charge
µC
largest charge
µC

(b) What is the charge on each if the force is attractive?
smallest charge
µC
largest charge
µC

• 
  

• 
  

Question Part Points Submissions Used

Explanation / Answer

a) Here, 8.98*109 *Q1 *Q2/0.8112 = 0.1

=> Q1 *Q2 = 7.32 *10-12

Also, Q1 + Q2 = 7.50 *10-6

=> Q1 = 6.35   µC                       and                   Q2   = 1.15    µC

=>    smallest charge   =   1.15    µC

=>    largest charge =    6.35   µC      

b)     Here, 8.98*109 *Q1 *Q2/0.8112 = - 0.1

=> Q1 *Q2 = - 7.32 *10-12

Also, Q1 + Q2 = 7.50 *10-6

=> Q1 = 8.375 µC                       and                   Q2   = - 0.875    µC

=>    smallest charge   =   - 0.875    µC

=>    largest charge =    8.375 µC      

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