[" 2.Unit of linear charge density "(lambda)" ) is? "],[[" (A) "cm," (B) "c/m^(2)],[" (C)."(c)/(m)" (D)."(c)/(m^(3))]]

The dimensional formula of linear charge density lambda is

Define linear charge density and write its SI units.

The S.I. unit of surface charge density is ________ .

[" 29.An infinitely long straight wire of linear charge density "lambda" is along a body diagonal of a "],[" cube of side "a" .The electric flux through any face of the cube is "sqrt(P)(lambda a)/(6 epsilon_(0))" .The value of "]

A charge particle q is released at a distance R_(@) from the infinite long wire of linear charge density lambda . Then velocity will be proportional to (At distance R from the wire)

An infinitely long line of linear charge density lambda is shown in the figure. The potential difference V_(A)-V_(B) between the two points A and B is

In a figure shown find the ratio of the linear charge densites lambda_(1) (on semi-infinite straight wire) and lambda_(2) (on semi-circular part) that is, lambda_(1)//lambda_(2) so that the field at O is along y direction.

Two semicircular rings lying in same plane, of uniform linear charge density lambda have radius r and 2r. They are joined using two straight uniformly charged wires of linear charge density lambda and length r as shown in figure. The magnitude of electric field at common centre of semi circular rings is -