Electric current can indeed pass through wood. Although wood is generally classified as a non-conductive material due to its low electrical conductivity, it is not an absolute insulator. Wood's ability to conduct electricity depends on several factors such as moisture content, the type of wood, and the presence of impurities.

When wood is dry, it acts as a poor conductor of electricity due to the low concentration of free electrons. However, as the moisture content in the wood increases, the conductivity increases. Water acts as an electrolyte, allowing ions to move freely and facilitating the flow of electric current.

The type of wood also plays a role in determining its electrical conductivity. Some species of wood, such as oak and maple, are naturally more resistant to the passage of electric current compared to others, like pine and spruce. This is attributed to variations in the wood's density and chemical composition.

Furthermore, the presence of impurities, such as minerals and salts, can enhance the conductivity of wood. These impurities provide additional pathways for the movement of electric charge.

Therefore, while wood is often considered a non-conductive material, it can indeed conduct electricity, especially in the presence of moisture or impurities. However, its low electrical conductivity compared to metals or electrolytes makes it unsuitable for applications requiring high current flow.