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  • Answer the following: (a) The top of the atmosphere is at about 400 kV with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about 100 Vm_–1.

2.36 Answer the following:

(a) The top of the atmosphere is at about 400 kV with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about 100Vm^{-1}. Why then do we not get an electric shock as we step out of our house into the open? (Assume the house to be a steel cage so there is no field inside!)

Answers (1)

best_answer

The surface of the earth and our body are both good conductors. So our body and the ground both have the same equipotential surface, as we are connected to the ground. When we move outside the house, the equipotential surfaces in the air change so that our body and ground are kept at the same potential. Therefore, we do not get an electric shock.

Posted by

Pankaj Sanodiya

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