E0 = EF
1. a option is correct.
Test charge is use to find the electric field strength is referred to as a test charge since it is used to test the field strength. The test charge has a quantity of charge denoted by the symbol q.
F = kQq/r^2
2. Zero...c is correct option
Ifbr will be infinity then potential will be zero.
3. C option is correct.
Total work done of system will be zero.
Other option are
Energy never created.
Conservation of law of energy is applicable of no loss takes place.
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