Question

what does earthing mean?

Answer 1

earthing actually means that to connect electrical wires to ground.............
it is necessary to do so because.................... if excess current passes through the live wire it goes into the earth or ground and thus saves the device from getting burnt...................
hope it helps u,.........................

Answer 2

Earthing basically means transfer of electrical charge to the ground or earth. It is important as it helps while lightning. To prevent the charges hit the ground or buildings an earthing rod is attached to tall buildings. The earthing rod transfers the huge electrical currents to the earth.