KS3 Y9 Current Electricity

Gap-fill exercise.

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Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button if available to get a clue. Note that you will lose points if you ask for hints or clues!
   bottleneck      changing      chemical energy      complete      components      electric current      electrical energy      Electricity      energy      flow      hot      Light bulbs      parallel      push      push of electrons      resist      resistance      resistors      series      slow down      slowing down      transferring      Voltage      voltage      voltmeter      Voltmeters      volts      Wires   
9Ib Current Electricity

is a useful way of one form of energy into another. In other words it is a way of energy. In an electrons .

In order for an electric current to flow the electrical circuit must be .

The following are required. First a cell to the electrons around the circuit is needed. This is how is passed on. are required for connecting the of the circuit. Bulbs, motors and bells are some examples of .

Cells have stored in them. This is converted to when there is a complete circuit. Cells the electrons and thus releases the energy round the circuit. The measures the round the circuit and indicates how much the cell gives to the current.

is measured in and the is used to measure it.

If we want to know how much is passing through an electrical component must be connected in with the component and never in .

Electric components usually the of electrons. Imagine a six lane motorway with lots of cars suddenly ending up with a one lane highway. This can cause a situation. When this happens the cars slow down and a lot of heat energy is given out there.

This is what happens with electric . They are usually called because they the flow of electric current. is another example. That is why bulbs get apart from giving out light energy.

To conclude measures the of electrons in a circuit. The measures the of electrons and so tells us how much is given out. The is a measure of how capable a component is in the flow of electric current.

 

 

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