In order for electrical current to flow through a solid, the solid must have electrons the electrons in the solid must be able to move the solid must have protons the electrons must be in tight formation

Electrical current will flow through a solid by the means of electrons.  The electrons in the solid must be able to move from lower to higher electrical potential. The electric current in certain solid electrolytes like ice is entirely composed of flowing ions.

The electrons in the solid must be able to move

volts times amps 6 x 0.5 3w