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Two identical conducting balls A and B h...

Two identical conducting balls A and B have charges- Q and + 3Q respectively. They are brought in contact with each other and then separated by a distance d part. Find the nature of the Coulomb force between them.

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To solve the problem step by step, we will analyze the charges on the balls before and after they are brought into contact, and then determine the nature of the Coulomb force between them. ### Step 1: Identify Initial Charges - Ball A has a charge of \(-Q\). - Ball B has a charge of \(+3Q\). ### Step 2: Calculate Total Charge When Contacted When the two balls are brought into contact, the total charge is the sum of their individual charges: ...
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Knowledge Check

  • Two conducting spheres of radii r_(1) and r_(2) having charges Q_(1) and Q_(2) respectively are connected to each other. There is

    A
    no change in the energy of the system
    B
    an increase in the energy of the system
    C
    always a decrease in the energy of the system
    D
    a decrease in the energy of the system unless `Q_(1)r_(2)=Q_(2)r_(1)`

  • Three identical conducting spheres A, B and C are given charges +Q, +q and -2Q respectively. A and C are brought in to contact and separated. Next B and C are brought in to contact and separated. If A,B and C are arranged so that their centres form an equilateral triangle and they do not touch each wihich of the following statement is correct regarding the forces between the pairs (A,B),(B,C), and (C,A)?

    A
    (A,B) atrract, (B,C) attract, (C,A) repel
    B
    (A,B) attract, (B,C) repel, (C,A) repel
    C
    (A,B) atrract, (B,C) repel, (C,A) attract
    D
    (A,B) repel, (B,c) attract, (C,A) repel

  • Two identical small conducting spheres having unequal positive charges q_1 and q_2 are separated by a distance r. If they are now made to touch each other and then separated again to the same edistance, the electrostatic formce between them in this case will be

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    less than before
    B
    same as before
    C
    more than before
    D
    zero

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