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Question

There are two small identical conducting sphere X and Y having charges -10 micro coulombs and +6 micro coulombs respectively. Firstly the spheres are brought in contact and then separated.
what is the charge on each sphere in micro coulombs ?

A
Sphere X = -4 and Sphere Y = 0
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B
Sphere X = -2 and Sphere Y = -2
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C
Sphere X = +2 and Sphere Y = -2
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D
Sphere X = +4 and Sphere Y = 0
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E
Sphere X = +6 and Sphere Y = -10
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Solution

The correct option is C Sphere X = -2 and Sphere Y = -2
When the spheres are brought in contact, the charge will flow still they have same electrical potential. Thus after separation they will have same charge.
The average charge on each sphere =(10+6)/2=2μC

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