Available Answers

1. 1.

   Choose and write the correct answer(MCQs):

   1. Who proved that the atmosphere contains large amount of electricity:
      1. Newton
      2. Rudolp Diesel
      3. Einstein
      4. Franklin
   2. Lightning can destroy:
      1. small hut
      2. tall buildings 
      3. crops
      4. roads
   3. Energy is produced when ___________ charged clouds approach each other.
      1. electrical
      2. kinetic
      3. potential 
      4. mechanical
   4. The lower end of the rod of the lightning conductor is connected to the:
      1. electric pole
      2. earth plate
      3. copper plate
      4. building 
   5. Which of the following cannot be charged easily by friction:
      1. a copper rod
      2. a ball of wood
      3. a floated balloon
      4. a glass rod
2. 2.

   Fill in the blanks:

   1. An ebonite rod acquires a _________ charge when rubbed with cat's skin.
   2. Similar charges _________ each other.
   3. ___________ and oppositely charges are produced during electrification.
   4. ____________ is produced when oppositely charged clouds get discharged.
   5. Opposites charges ____________ each other.
   6. Lighting __________ protects high buildings from the damage cause by lightning.
   7. ___________ is the surest test of electrification.
3. 3.

   Match the column A with column B:

   A	B
   1. A kind of force acting between two similarly charged bodies.	a. Negative
   2. A charge produced on an ebonite rod on rubbing with fur.	b. Positive
   3. A kind of force acting between two oppositely charged bodies.	c. Repulsion
   4. A charge produced on a glass rod on rubbing with silk.	d. Attraction
   5. A phenomenon due to which a dazzling white light is formed.	e. Lightning

4. 4.

   How does lightning conductor prevent damage to building during lightning?
5. 5.

   What is the reason behind thunder and lighting?
6. 6.

   How does lightning conductor prevent damage to buildings during lighting?