Define earthing.
Important Questions on Some Natural Phenomena
Define electrification by friction.
Write the range of a very strong earthquake on the Richter scale.
If the materials used for constructing a building were good conductors, do you think lightning will strike the building?
In an electroscope, if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying an equal amount of positive charge is brought in contact with the clip, what will happen?
An earthquake measures on the Richter scale, would it be recorded by seismograph?
Explain why, sometimes when we take off the woollen sweater in a dark room, we can see tiny sparks of light and hear a cracking sound.
State what happens actually, when we touch the metal top of a charged electroscope with our fingers? What is this process known as?
