If a charged conductor is enclosed by a hollow charged conducting shell (assumed concentric and spherical), and they are connected by a conducting wire, then which of the following statement(s) would be correct?

Which of the following is true for the figure showing electric lines of force? ($E$ is an electrical field, and $V$ is potential.)

An uncharged conducting ball $B$ lies inside a charged conductor $A$ as shown in the figure. $B$ is isolated from $A$.

For the situation shown in figure, mark the correct statement(s).

A wire having a uniform linear charge density $\lambda$ is bent in the form of a ring of radius $R$. The point $A$ as shown in the figure is in the plane of the ring but not at the center. Two elements of the ring of lengths $a_1$ and $a_2$ subtend very small same angle at a point $A$. They are at distances $r_1$ and $r_2$ from the point $A$, respectively $\left(r_2>r_1\right)$

A uniform electric field $E_0$ exists in a region at angle $45°$ with the $x$-axis. There are two-point $A(a, 0)$ and $B(0, b)$ having potential $V_{\mathrm{A}}$ and $V_{\mathrm{B}}$, respectively, then