Discussion
Electrical potential of earth at any point is conventionally taken as:
Answer: B
The potential of earth is conventionally taken as 0.
The earth is a very large conductor whose potential changes negligibly when charge flows into or out of it, so it is used as the reference level for electrical potential and assigned the value zero. All other potentials are measured relative to it.
1, 0.1 and infinity are not used as the earth's potential. In electrostatics the zero of potential is sometimes placed at an infinite distance, but that is a choice of where zero lies, not a value of infinity; the earth itself is taken at 0.
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