A student investigates a wind turbine, which is an electrical generator driven by a propeller blade.
Plan an experiment which will enable him to investigate how the current in a resistor connected across the terminals of the turbine varies with the speed of the air flow through the turbine.
The apparatus available includes:
a model wind turbine as shown in Fig. 4.1
an electric fan to provide the moving air to turn the turbine
a device for measuring air speed.
In your plan, you should:
list any additional apparatus needed
complete the wind turbine circuit diagram on Fig. 4.1
state the key variables to be kept constant
explain briefly how to carry out the experiment, including how the speed of the air flow is to be changed
explain how to use the readings to reach a conclusion.
Did this page help you?