Īns: The lithosphere of the Earth is fragmented into many pieces. If lightning strikes the building or any other objects, then the lightning conductor provides an easy and direct path for the lightning bolt to pass to the ground without affecting them. It runs from the top to the bottom, along the outer wall or any other object of the building, which is to be protected. What do you mean by lightning conductor?Īns : Lightning conductor is a device used to protect tall buildings from the damaging effects of lightning. Why does a plastic comb rubbed with dry hair attract tiny pieces of paper?Īns : Plastic comb gets electrically charged due to rubbing & therefore it attracts tiny pieces of paper which are neutral, as a charged body can attract an uncharged body. Therefore, the main purpose of providing earthing in buildings is to protect ourselves from electrical shocks due to any leakage of electrical current. In such cases, earthing helps to divert the path of the current to earth in order to protect us from getting an electric shock. What is the main purpose of providing earthing in buildings?Īns: There may be an accidental or unattended leakage of electric current in buildings.Also during monsoons, there are chances of a live wire coming in contact with the building wall. Lightning is Interaction of ChargesĪns: A device for detecting and determining the presence of electric charges by means of electrostatic attraction and repulsion is called an electroscope.Īns: The process of transferring charge from a charged object to the earth is called earthing.ĩ. Interaction of charges is called _.Īns : a. The shaking of the earth is called _.Īns : c. Positive Charge is Acquired by a Glass Rod When it is Rubbed with SilkĤ. The charge acquired by a glass rod when it is rubbed with silk is _.Īns : b. A Copper Rod Cannot be Charged Easily by Frictionģ. Which of the following cannot be charged easily by friction?Īns: a.
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