Two tiny spheres carrying charges $1.8\mu C\text{and}2.8\mu C$ are located at 40 cm apart. The potential at the mid-point of the line joining the two charges is

Two tiny spheres carrying charges $1.5\mu C$ and $2.5\mu C$ are located 30 cm apart. Find the potential
(a) at the mid-point of the line joining the two charges and
(b). At a point 10 cm from this mid-point in a plane normal to the line and passing through the mid-point.

Two tiny spheres carrying charges $1.5\mu C\text{and}2.5\mu C$ are located 30 cm apart. Find the potential and electric field:
(a) at the mid-point of the line joining the two charges, and
(b) at a point 10 cm from this mid-point in a plane normal to the line and passing through the mid point.

Two charges -4 C and +4 C are placed at 10 cm apart. The potential at the center of the line joining two charges is

Two tiny spheres carrying charges $1.5\mu C$ and $2.5\mu C$ are located 30 cm apart. Find the potential
(a) at the mid-point of the line joining the two charges and
(b). At a point 10 cm from this mid-point in a plane normal to the line and passing through the mid-point.

Two charges $-10C$ and $+10C$ are placed 10 cm apart. Potential at the centre of the line joining the two charges is

Two point charges of $+10\mu C$ and $+20\mu C$ are placed in free space 2 cm apart. Find the electric potential at the middle point of the line joining the two charges.

Two charges $+5\mu C$ and $+10\mu C$ are placed $20cm$ apart. The net electric field at the mid-point between the two charges is

Two positive charges of 1mu C$\text{and}$2 mu C are placed 1 metre apart. The value of electric field in N/C at the middle point of the line joining the charge will be :

Two point charges $q_A=3\mu C\text{and}{q}_B=-3\mu C$ are located 20 cm apart in vacuum.
What is the electric field at the midpoint O of the line AB joining the two charges?
If a negative test charges of magnitude $1.5\times {10}^{-9}C$
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Two electric charges of $9\mu C\text{and}-3\mu C$ are placed 0.16m apart in air. There are two points A and B on the line joining the two charges at distance of (1) 0.04m from $-3\mu C$ and in between the charges and (ii) 0.08 m from $-3\mu C$ and out side the two charges. The potentials at A and B are