Electromotive force (EMF) is equal to the terminal potential difference when no current flows. ... EMF (ϵ) is the amount of energy (E) provided by the battery to each coulomb of charge (Q) passing through.

Is emf same direction as current?

When there is an induced emf then a force will act on a charge and the direction of that force on a positive charge will give you the direction of the induced (conventional) current if there is one.

Is emf voltage or current?

Emf is not a force at all; it is a special type of potential difference. To be precise, the electromotive force (emf) is the potential difference of a source when no current is flowing. Units of emf are volts. Figure 1.