A direct current flows in only one direction. On a voltage-time graph this would appear as a straight horizontal line at a constant voltage. Car batteries, dry cells and solar cells all provide a ...

An electric current can flow in the wire from one end ... If the two or more cells point in the same direction, the more cells, the bigger the potential difference. In a television series, you ...

When you push the magnet through the middle of the coil, an electric current is produced in the wire. The current flows in one direction as the magnet is pushed in, and in the other direction as ...