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Bimetallic Strip Activity

Bimetallic Strip Activity. Gather the following materials: a) Bimetallic strip assembly b) 1 positive and 1 negative lead c) alligator clips (if necessary) d) power supply and Pasco VI Sensor

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Bimetallic Strip Activity

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  1. Bimetallic Strip Activity • Gather the following materials: a) Bimetallic strip assembly b) 1 positive and 1 negative lead c) alligator clips (if necessary) d) power supply and Pasco VI Sensor 2. Connect leads from power supply to bimetallic strip assembly (you try first and then have Mr.D check your setup before starting) and then connect your sensor to measure current 3. Draw a sketch of your set-up and label key parts (Mr.D will help if need be) 4. Depress the “A” button to select current on front panel 5. Adjust current dial down to zero. 6. Turn on power switch. Turn dial up until current reads 0.5A. Observe assembly strip and record if anything happens. 7. Turn up current to 1.2A. Observe assembly strip and record if anything happens.. 8. Repeat step 7 but turn up current to 1.9A. Observe assembly strip and record if anything happens.. 9. Unplug leads and power supply. 10. Reverse your lead connections…red to black and black to red 11. Turn on power supply and turn up current to 1.9A. Observe and record your observations.

  2. Bimetallic Strip Activity Observations: Questions: • According to your observations what happened as you increased the current? • What part of the assembly experienced a change? • What happened when you reversed your lead polarity? Did you expect this? 4a.Touch the capacitor. What do you notice? Why do you think this occurs? 4b. What is the function of a capacitor? Based on your lab set up, how do you know this? 5. Do some internet research and state the following: a) what two types of metals are bimetallic strips typically made of? b) what are 3 common uses of bimetallic strips 6. Explain how the bimetallic strip acts as a thermal energy convertor. 7. List each energy conversion present in your system (from start to finish). (ex. MechanicalFluid)

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