Question

A sphere of charge +2Q brought in contact to another sphere of charge -4 Q what will be the charge on both the sphere A and B after separation​

Answer 1

Answer:

Sphere 1st = + 2 Q , Sphere 2nd = - 4Q

When ,

Comes in Contact => Transfer of Electrons will take place

or ,

Redistribution of Electrons takes place

So that More positive can became less positive & More negative can became less negative .

Therefore , Total Charge = 2 Q - 4 Q = ( - 2Q )

So , Charge on Each Sphere = ( -2Q ) / 2 = { - Q }

Answer 2

Here,

As both the charges are in contanct with each other thus, static electricity through conduction will take place.

• The potential of positive charges is high than that of negative charge,
• Thus electrons will start moving from negatively charged sphere to positively charged sphere, until the potential difference on both the charges will not be same.

So, at first -2 charge will get tranfered to +2Q charge and it will become netural, now -2 charge will be on one, and 0 will be on another, now -1 charge will be transfer to the neutral sphere, and finally both the spheres will have -1 charges.

[It will become more clear from the attachment.]