A flat conducting ribbon of width \(w\), thickness \(t\), and charge carrier number density \(n\) carries a steady current \(I\). A uniform magnetic field of magnitude \(B\) is directed perpendicular to the flat face of the ribbon. A steady Hall potential difference \(V_H\) is measured across the width \(w\) of the ribbon. Assuming charge carriers each carry a charge of magnitude \(e\), which of the following expressions represents the current \(I\) in the ribbon?