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Insulators and Conductors

Insulators and Conductors. Electric Circuit Current provided by battery flows through wire, into the light bulb, through another wire, and back to the battery. Current: flow of electrons. Electric lamp (glowing). Electric lamp (not glowing). Conductor lets electrons flow. Insulator

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Insulators and Conductors

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  1. Insulators and Conductors • Electric Circuit • Current provided by battery flows through wire, into the light bulb, through another wire, and back to the battery. • Current: flow of electrons Electric lamp (glowing) Electric lamp (not glowing) Conductor lets electrons flow Insulator doesn’t let electrons flow

  2. Insulators and Conductors Atom Insulators hold electrons close like a dog on a leash Insulators let electrons flow like dogs running free Conductors let electrons flow like dogs running free

  3. Resistance Higher Resistance Lower Resistance • Resistance: is like resistance to water flow in a hose. Larger diameter hose -less resistance, longer hose –more resistance • Voltage like pressure, current like flow • Resistance: How much the material resists the flow of electrons R = V / I • The higher the resistance, the slower the flow of electrons, the smaller the power output R = ( x L) / A R - Resistance  - Density L - Length A - Area

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