Question

what is the electric field strength between two parallel plates, with a potential difference between them of 28V, 5.1mm apart?
1) 0.15 MV/m
2) 143V/m
3) 182 V/m
4) 5.5 kV/m

Answer 1

1. Calculate value of electric field strength:
E = U/L;
E = 28V / 0.0051m = 5490 V/m = 5.5 kV/m;

Answer
Choose variant 4) 5.5 kV/m;