Find potential difference between centres of rings

The two oppositely charged rings of radii a are seprated by s . Find the potential difference between center of the ring ?

Two thin wire rings each having a radius R are placed at a distance d apart with their axes coiciding. The charges on the two rings are +q and -q . The potential difference between the centres of the two rings is

There is a electric circuit as shown in the figure. Find potential difference between points a and b.

Find the potential difference between the points A and B in the circuit shoun in. .

Find the potential difference between the points A and B and between the points B ans C of figure in steady state.

Find the potential difference between the points A and B . (a) If V_A - V_B = 5 V , find voltage across each capacitor.

Find the potential difference between points B and D in the figure below.

In the given figure there are two concentric shells find potential difference between spheres.

Two rings of radii 5m and 10m move in opposite directions with velocity 20 m/s and 10 m/s respectively, on a conducting curface S. There is a uniform magnetic field of magnitude 0.1T perpendicular to the plane of the rings. Find the potential difference between the highest points of the two rings.