What Should Be The Minimum Earth Resistance Value In Ohms For Computers.?

The earth resistance value can be checked by the use of earth resistance tester (called megger earth tester). The best earth resistance should be less than one ohm but the permissible value is less than 5 ohm. For rocky areas it should be less than 8 ohms.

Try this ohms law calculator app through which you can easily came to know about the calculations of voltage,current and resistance.