A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because (a) friction between the layers of newspaper produces heat. (b) air trapped between the layers of newspaper is a bad conductor of heat. (c) newspaper is a conductor of heat. (d) newspaper is at a higher temperature than the temperature of the surrounding.

Answer: (b) air trapped between the layers of newspaper is a bad conductor of heat.

It’s due to the fact that newspaper is an insulator, meaning that it does not permit heat or cold to pass through it. As a result, the beggar wraps himself in newspaper to prevent heat from his body from escaping and cold from the outside from entering his body.

  • An electrical conductor is defined as materials that allow electricity to flow through them easily. This property of conductors that allow them to conduct electricity is known as conductivity. The flow of electrons in a conductor is known as the electric current. The force required to make that current flow through the conductor is known as voltage.
  • Insulators are materials that hinder the free flow of electrons from one particle of the element to another. If we transfer some amount of charge to such an element at any point, the charge remains at the initial location and does not get distributed across the surface.

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