Unlike charges attract. Many objects can become electrically charged when they have an excess of either negative or positive charges. For example, when you slide your shoes on a carpet while walking across a room, charge is transferred from your shoes to the carpet, and you take on a net charge. If a positive charge is placed at point 1, sketch the Electric Force Field lines around the two charges. If a negative charge is placed at point 2, sketch the Electric Force Field lines around the two charges.
Conductors have low electrical resistivities.
Insulators have high electrical resistivities. The unit of electric potential difference is the volt . Electric current is the rate that charge moves through a circuit. When things heat up, they glow. Motions of individual electrons through wire are intermittent.