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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
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B
Charge 2 attracts Charge 3
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C
Charge 1 repels Charge 3
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D
Charge 2 repels Charge 4
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E
Charge 1 repels Charge 4
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Solution

The correct option is B 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.


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