A complete circuit is required for electric current to flow

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Presentation transcript:

A complete circuit is required for electric current to flow Simple Circuits A complete circuit is required for electric current to flow Circuits can be drawn using circuit diagrams with correct symbols Components can be arranged in series or parallel Simple circuits

Circuit Symbols Circuit symbols

Switches – series circuit

Switches - parallel circuit

Drag & Drop Circuit Drag & Drop circuit

Series circuit – 1 bulb Series circuit – 1 bulb

Series circuit – 2 bulbs Series circuit – 2 bulbs

Parallel Circuit Parallel circuit

Conduction in Metals Metals are good conductors of electricity because they have delocalised electrons which can carry the current. Conduction in metals

Conduction in Metals Conduction in metals

The negative ions (anions) attract to the positive electrode (anode) Conduction in liquids Ionic compounds conduct electricity when molten or dissolved in water. The current is carried by charged particles called ions. The positive ions (cations) attract to the negative electrode (cathode) The negative ions (anions) attract to the positive electrode (anode) At the electrodes the ions can lose their charge and form new substances. This process is called electrolysis Conduction in liquids

Conduction in liquids Conduction in liquids