Important Questions from Applications of Gauss’s Law
An infinitly long wire is charged uniformly with charge density λ and placed in air, the electric field at distance r from wire will be:
Find the electric field outside the cylinder, a distance r from the axis using Gauss's law, if a long & straight wire is surrounded by a hollow metal cylinder whose axis coincides with that of the wire. The wire has a charge per unit length of λ, and the cylinder has a net charge per unit length of 2λ?
An isotropic radiation has a field pattern given by $E=\frac{10I}{r} v/m$ where I is the terminal current and r is the distance in meters. The radiation resistance of the antenna is ____________.
- The electric field lines from an isolated positively charged conducting sphere are
- Consider an infinitely long straight wire with uniform linear charge density $\lambda$. The electric field $E$ at a distance $r$, perpendicular to the length of the wire, is:
