What is the ratio of orbital velocity to escape velocity

Orbital velocity is the velocity of celestial body/satellite revolving around another celestial body in circular orbit. 
V =  ---(i)

Escape velocity is the minimum initial velocity a body should be given to escape it from gravitational field.
V =  ---- (ii)

Divide (i) and (ii)



R = radius of circular orbit, M = mass of the celestial body about which satellite/body is performing circular motion. G = Universal gravitational constant 

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.