Solve this: Three isolated equal charges are placed at the three corners of an equilateral triangle as shown in figure. The statement which is true for net electric potential V and net electric field intensity E at the centre of the triangle is


$$\begin{gathered} 1. E=0, V=0 \\ 2. V=0, E\ne 0 \\ 3. E=0, V\ne 0 \\ 4. E\ne 0, V\ne 0 \end{gathered}$$