$3$(a) Two small solid metal balls A and B of radii R and 2 R having charge densities $\displaystyle 2 \sigma$ and $\displaystyle 3 \sigma$ respectively are kept far apart. Find the charge densities on A and B after they are connected by a conducting wire.

OR

(b) Two infinitely long straight wires ' 1 ' and ' 2 ' are placed d distance apart, parallel to each other, as shown in the figure. They are uniformly charged having charge densities $\displaystyle \lambda$ and $\displaystyle -\frac{\lambda}{2}$ respectively. Locate the position of the point from wire ' 1 ' at which the net electric field is zero and identify the region in which it lies. 2025_CBSE_Physics_Set_Region5_Subset_Set3_Q26__b_p15_13

2025_CBSE_Physics_Set_Region5_Subset_Set3_Q26__b_p15_13

Physics · Electric Charges and Fields