A droplet of ink in an industrial ink-jet printer carries a charge of 1.9×10−10C and is deflected onto paper by a force of 4.2×10−4N.
The Strength of the electric field produced is
The calculation is as follows:
Electric Field represent the region where an electric force should be experienced.
It is represented mathematically as,
Here
E = Electric field strength,
F = electric force,
Q = test charge.
So,