As the earth or short circuit fault occur at any terminal of the circuit. How the value of the resistance decrease for Earth fault and short circuit. for example
Positive pole to ground: resistance variance from initial stage to final stage
Pole to pole: resistance variance from initial stage to final stage
On the ground on that big land mass to be considered as zero point and all parts of the ground connected to the ground potential or the potential to be ground zero.
Grounding is done for two reasons, one is the correct behavior of electrical systems, in other words the protection of electrical appliances (electric field) and the protection of people who are connected in some way with electric devices (protective earth).
Generally in all cases grounding resistance are very less.....usually it is below 1 Ohm.In some rare cases it may be upto maximum 10 ohm.
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