If the network has a/an ________ between two nodes, the concept of Supernode is used instead of nodal analysis.

Super node:

If a voltage source is connected between two non-reference nodes, then we combine the two nodes as to yield super node.

Example:

In the above circuit diagram, V₁ and V₂ forms supernode.

Note: Always apply mesh analysis of the node

Super mesh:

If a current source is present at the common boundary of two meshes, then we create a super mesh by avoiding the current source and any element connected to it in series.

Example:

In the above circuit diagram, there is a current source in between two mesh and hence it forms a super mesh.

Note: Always apply nodal analysis at super mesh.