Conductors and Insulators

RHSA SNC1D: Electricity Name: ______Conductors and Insulators Metals are good conductors. Conductors are substances that let electrons move easily from one atom to the next atom. Examples of good conductors are gold, silver and copper.

An insulator is a substance that does NOT let electrons move easily from one atom to the next atom. Examples are plastic, rubber and wood.

In an insulator the electric charge stays in one location. This is how we are drawing the charge diagrams for static charges by friction or contact.

Insulator - Negative Rubber 8+ 12-

In this example the rubber was rubbed on the left side by silk and got a negative charge. The excess electrons stay on the left side. RHSA SNC1D: Electricity Name: ______

Conductor - Negative Copper 8+ 12-

In a conductor the electric charge is evenly distributed in the substance. In this example the copper plate was rubbed on the left side by silk and got a negative charge. However, the excess of electrons is evenly distributed and the whole copper plate is charged.

Grounding means a charged object shares its electrical charge with the Earth and becomes neutral. The charged object discharges any excess electrons or gains electrons.

Read p 399 – 401 Do p 401 # 1-5 RHSA SNC1D: Electricity Name: ______Conductors and Insulators

Metals are good conductors. Conductors are ______from one atom to the next atom. Examples of good conductors are ______An insulator is a substance that ______. Examples are ______.

In an insulator the electric ______. This is how we are drawing the charge diagrams for static charges by friction or contact.

______

In this example the rubber was ______The excess electrons stay on the left side.

______

In a conductor the ______. In this example the copper plate was rubbed on the left side by silk and got a negative charge. However, the ______and the whole copper plate is charged.

Grounding means ______and becomes ______. The charged object discharges any excess electrons or gains electrons.

Read p 399 – 401 Do p 401 # 1-5