Question

Two identical metallic spherical shells A and B having charges + 40 and -10Q are kept a certain distance apart. A third identical uncharged sphere C is first placed in contact with sphere A and then with sphere B, then spheres A and B are brought in contact and then separated. Find the charge on the spheres A and B

Answer 1

Answer:

12.5 units on each

Explanation:

charge on A=+40

charge on B=-10

initial charge on C=0

after in contact with A, charge on C will be=+20

because equal distribution of charges will take place due to conduction

now that 20 units charge is already on C, when it comes in contact with B, it will get a charge of +5 units

now

charge on sphere A=+20 units

charge on sphere B=+5 units

now if the spheres are made in contact,

charges on each of them will be 12.5 units