The total electric flux through a closed cylindrical (length = 1.2 m, diameter = 0.20 m) surface is equal to –5.0 N ⋅ m2/C. Determine the net charge within the cylinder.

The net charge within the cylinder is (-44.25 pC)

Explanation:

Given that,

Total electric flux,

Length of the cylinder, l = 1.2 m

Diameter of the cylinder, d = 0.2 m              

We know that the Gauss's law of electrostatics gives the relation between electric flux and the net charge. It is given by :

q is net charge within the cylinder

So, the net charge within the cylinder is (-44.25 pC). Hence, this is the required solution.            

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach