Can effect of gravity be broken (counteracted) by electric force? Can we make a jacket using an electronic circuit that uses electric force to cancel the effect of gravity so that we get lifted in air.
 A: Yes you can levitate yourself with an electric force, however there are a few caveats:


*

*The ground beneath you needs to be charged

*You need to be in a very dry area (i.e., very low humidity)

*You are okay with levitation heights being on the order of a few $\rm mm$


We're likely not going to have an electrostatically-levitated objects due to the small levitation heights, but it is most certainly practical.
As a fun aside, there is a website that shows off some home-made electrostatic levitation experiments.
A: Short answer not really.
There are 2 3 ways to cancel gravity, 
-one you create anti gravitation particles which no human scientist has ever produced,
 let alone observed. (or where they its own antiparticle i don't remember)

-two you propel your self with air,
so basically if with electronic jacket you mean a electric powered airplane then yes

-use photons like a highly powered laser beam

Electromagnetic forces only have a strong interaction between 2 charged entities the earth is neutral so therefore it would be slightly problematic.
edit 
Electrostatic levitation is a process that can only apply when both the person floating and the surface he is floating above are oppositely charged. so there can not be a singular jacket that can help you levitate. the maglev train uses electromagnet force to not only levitate but also propel itself at high speed without touching the ground. This process requires a rail and it cannot hover on it own.
p.s 
In physics there is a concept called a antimatter engine that emits a beam of photons to propel itself, because photons are but excitation's  of the electromagnet field a jacket having a mini antimatter engine could in theory propel you.
