Question

Charge 1 attracts Charge 2, Charge 2 repels Charge 3, and Charge 3 attracts Charge 4. Which of the following option must hold good for the given condition of four point charges?

• A. Charge 1 attracts Charge 4
• B. Charge 2 attracts Charge 3
• C. Charge 1 repels Charge 3
• D. Charge 2 repels Charge 4
• E. Charge 1 repels Charge 4

Answer 1

Answer: (E)

Charge 1 repels Charge 4

If charge 1 is positive and charge 2 is negative, then charge 1 and 2 will attract. As charge 2 and 3 repels so charge 3 should be negative. Since charge 3 and 4 attracts so charge 4 should be positive. Thus, charge 1 and 4 both are same charge so they will repel. If you take charge 1 is negative and 2 is positive similarly you get 4 is negative so 1 and 4 both have same charge.