Two wires made of different materials have the same uniform current density. They carry the same current only if: OA the potential differences across them are the same their cross-sectional areas are the same OB OC both their lengths and cross-sectional areas are the same OD their lengths are the same OE the electric fields in them are the same

Two wires made of different materials have the same uniform current density. They carry the same current only if: OA the potential differences across them are the same their cross-sectional areas are the same OB OC both their lengths and cross-sectional areas are the same OD their lengths are the same OE the electric fields in them are the same