Identify the long metal rod in the following picture that has spikes at the top and its lower end is connected to a copper plate. It protects tall buildings from damage due to lightning.
Typing
The electrical energy consumed per unit time by an electrical appliance
The commercial unit of electricity
The branch of physics that deals with the study of static charges, their behaviour with each other and the forces exerted by them
The number of electrons present in the outermost orbit of an atom
The flow of charge through a conductor
The build-up of charges on the surface of an object
The materials that allow the electrons to flow through them
The materials that do not allow the electrons to flow through them
