NDA2015General AbilityGeneral ScienceActual
Lightning conductors are used to protect building from lightning strikes. Which of the following statements is / are true about lightning conductors? 1. Lightning conductors create an electric field at its top so that lightning strikes it preferentially 2. Lightning conductors reduce the effect of the strike by uniformly distributing the charge (current) over the surface of the building 3. Lightning conductors take a
Options
- A1 and 2
- B3 and 4 only
- C1, 3 and 4
- D4 only
Correct answer
C. 1, 3 and 4
Step-by-step solution
Lightning conductor, is a good conductor of electric current, so it create an electric field at its top to attract lightning conduction (i.e., charge). It carries all charges to deep in the earth without harming the building. These conductors are installed at corners or sides walls taller than the walls so that lighting strikes these first.