I feel it will no longer be healthy because the jelly applied to the leaves blocked the stomata. As a result, the plant would be deprived of oxygen needed for respiration. It wouldn't be able to carry out photosynthesis since it wouldn't have access to carbon dioxide.
Another Answer could be:
When you apply the jelly to the stomata of the leaves, they become covered, and transpiration ceases. This reduces the escape of water vapour and allows the leaf's moisture to be retained for a longer period of time. However, because the jelly layer prevents all sorts of gaseous exchange, photosynthesis and respiration are also impossible.
, electricity is just electrons (sub atomic particles) moving through a conductor. Light is also just subatomic particles moving through a conductor (1.e. transparent medium) and both are part of the electromagnetic spectrum.
I do believe that it is both naturally occurring and caused by human activity. Although science has proven that it is something that naturally progresses with time, humans have sped up the process. Hope this helps:)