How cathode is positively charged in voltaic cell?

[proton007007]

I'm sorry but this is just wrong.
They don't. Electrons have a negative charge, protons have a positive charge, and neutrons are electrically neutral. You're replying to a bad answer.
The electrons that flow into the cathode are used in the chemical reaction between the cathode and the electrolyte. They are indeed 'lost' from the cathode in this reaction.

What I actually meant was that the electrons that reach at the electrode get consumed and the negative charge doesn't linger on . In totality , everything is neutral . The electrolytic cell in whole is neutral . The cathode is not charged but as you said , the action of loss of electron makes us call it positive electrode .

 

[Borek]

The cathode is not charged

It is. If it wasn't charged there would be no potential difference between cathode and anode.

Charge is typically pretty small, but it definitely is there.