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What are the forms, of energy into which the electrical energy of the atmosphere is dissipated during a lightning ? (Hint : The earth has an electric field of about 100 Vm^(-1) at its surface In the downward direction, corresponding to a surface charge density = - 10^(-9)cm^(-2). Due to the slight conductivity of the atmosphere up to about 50 km (beyond which it is good conductor), about + 1800 C is pumped every second into the earth as a whole. The earth, however, does not get discharged since thunderstorms and lightning occurring continually all over the globe pump an equal amount of negative charge on the earth). |
| Answer» Solution :The ELECTRIC energy of the ATMOSPHERE is DISSIPATED as light energy in lighting as WELL as heat and sound energy in the accompanying THUNDER. | |