Radiant energy is the energy of electromagnetic waves. The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time and, like all forms of energy, its SI unit is the joule. The term is used particularly when radiation is emitted by a source into the surrounding environment. Radiant energy may be visible or invisible to the human eye.

i) leakage flux is those flux which goes through the air and linkage flux is those flux whose go through the cell.

ii)leakage flux is the loss at flux but linkage flu is warning flux.

iii)leakage flux is cause of eddy current loss and linkage flux is case of copper loss.

The Ratio of the total flux ( flux in iron path) to the useful flux (flux in air gap)

when a current flow through the coil then flux produced around the coil . if the flux linked same produced coil only then the flux is said to be leakage flux.

flux produced by one coil ,but linked with another coil then the flu is said to be mutual flux.

when a current flow through the coil then flux produced around the coil . if the flux linked same produced coil only then the flux is said to be leakage flux.

flux produced by one coil ,but linked with another coil then the flu is said to be mutual flux.