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

Two thin wire rings each having radius R are placed at distance d apart with their axes coinciding. The charges on the two are +Q and -Q . The potential difference between the centre so the two rings is

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

A half ring of radius r has a linear charge density lambda .The potential at the centre of the half ring is

Potential on the axis of ring of radius 3R and at distance 4R from centre of ring is (charge on the ring is Q )

A spherical conductor having charge q and radius r is placed at the centre of a spherical shell of radius R and having charge Q (R gt r). The potential difference between the two is

A spherical conductor having charge q and radius r is placed at the centre of a spherical shell of radius R and having charge Q(R gt r0 . The potential difference between the two is

Two identical rings P and Q of radius 0.1 m are mounted coaxially at a distance 0.5 m apart. The charges on the two rings are 2 mu C and 4 mu C , respectively. The work done in transferring a charge of 5 mu C from the center of P to that of Q is.

Two metallic rings of radius R are rolling on a metalilc rod. A magnetic fied of magnitude B is applied in the region. The magnitude of potential difference between points A and C on the two rings (as shown) , will be