In a certain region of space with volume 0.2 m^3 , the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is ?

In a certain region of space with volume 0.2 m^3 , the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is ?

(a) 0.5 N/C

(b) 1 N/C

(c) 5 N/C

(d) 0 N/C

Answer :  (d) 0 N/C