Answer Posted / a.senthil kumar

earth is more important to protect you, so we should be
provide the low resistance path for that.

already we very well known that the area is inversly
proportional to the reistance (R=p*l/a here p=specific
resistance(row), l= length, a = area)

from above
if area increased the resistance is decreased. it cause
the earth is bigger than other.

if area of earth pin small it offerd high resistance path
for earth. it cause we r not get earth easily

r u got it?

i think that it is correct answer for ur question up to my
knowldge

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