a straight wire of linear charge density λ= 3μ C/m and area of cross section a=4mm^2 is given as shown in figure. When wire is pulled with the speed 2m/s hen the curreng associated with it is

Q. A straight wire of linear change density $\lambda =2\mu \text{C/mm}$ and cross-sectional area $A=2{\text{mm}}^2$ is pulled horizontally with a constant speed of $2\text{m/s}$. The current associated due to motion of the wire will be

Q. The linear charge density of a uniform semicircular wire varies with $\theta$ as shown in the figure as $\lambda ={\lambda }_0\cos \theta$. Find the charge on the wire if $R$ is the radius of the ring.

Q. Find the force experienced by a semicircular rod having a charge q as shown in figure. Radius of the wire is R, and the line of charge with linear charge density $\lambda$ passes through its center and is perpendicular to the plane of wire.

Q. A charged wire of length $3\text{m}$ lies along $x-$ axis in such a way that its linear charge density is given by $\lambda =2x^2\text{C/m}$. The total charge on the wire is

Q. A semicircular rod charged with a charge $Q$ is placed as shown in figure. Radius of the wire is $R$ and the infinitely long line of charge with linear density $\lambda$ is passing through its centre and perpendicular to the plane of wire. If the force experienced by the semicircular rod is $\frac{\lambda Q}{x{\pi }^2{\epsilon }_{0}R}$. Then the value of $x$ is