In a region, the potential is represented by V(x, y, z) = 6x ذ 8xy ذ 8y + 6yz, where V is in volts and x, y, z are in metres. The electric force experienced by a charge of 2 coulomb situated at point (1, 1, 1) is :
24 N
30 N
4 √35 N
6 √5 N