Q1 An infinitely long conducting cylinder of radius 12cm has linear charge density 3nC/m.What is field at pt. 10cm from surface?

Q2 Two charges q₁ =6C and q₂ = -8C are within spherical surface of radius 5 cm.What is total flux through surface???????

Q3 A positively charged metal sphere of radius a is at centre of a metal shell of radius b.How should surface charge densities be related for field to be zero for r>b ?????

HELPPPPPPPPPPPPPPP

1) 12k

2)2/e0

3)obviously more field as the variation due to external field is inversely related.........

2 )  net charge enclosed /  

 = 2 /

from outside to inside

sid rocks plzzzzzzzzz explain your solutions...................

and answer to 3rd is a relation plzzzz establish it

for the 3rd question..............Charge densities shud be equal but opposite in signs...