20 Replies
Tim Neill

Hi Ashley! That's a relief ...

I recently created a simple interactive 'Ohm's Law Laboratory' which uses multiple custom sliders and the values their positions generate, to allow users to explore the relationship between circuit voltage, resistance, current and the rating of the circuit's fuse. Allow too much current to flow and you blow the fuse! The program explains what went wrong and why the fuse blew. The program also demonstrates how variables can be embedded in text to display customised feedback. It also highlights the fact that real-world physical sliders don't have to look like SL sliders!

I posted a screen grab and a web link on 'My Profile' page. The exercise is at: http://www.timneill.org.uk/Demos/story.html 

I would be happy to share the SL2 source with anyone too. This may be downloaded from: http://www.timneill.org.uk/Demos/Ohms_Law_v3.story

What is the procedure for entering other such programs for the e-Learning Challenges?

Thanks and regards, Tim

 

 

Ashley Terwilliger

Hi Tim,

We certainly don't want anyone blowing a fuse in the forums - so great example to share! ;-) Also, love that you're using the new profile feature - it's new for us! 

I love the look of your sliders and how it all plays together. But I have to ask a silly question - how do I know if I blew the fuse? Would that be just based on the overall voltage? I don't even know what type of subject at school I would have learned this in! 

E-Learning challenges you can always just respond and include your link and output there for anyone to take a look at. Our staff does keep an eye on them, and some older ones may not get as much community feedback - but it's definitely one worth sharing as a part of slider examples! 

Tim Neill

Hi Ashley,

Really glad you like it.

'How do I know if I blew the fuse?' The fuse filament glows red momentarily before melting with a 'pop'. As soon as the fuse wire has melted, the circuit is broken and the amps falls to zero. Ohm's Law defines the relationship between voltage across a circuit and the resistance (in Ohms) along the circuit. More volts increases current, more Resistance reduces the current flowing.

The 'Info' panel explains Ohm's Law, with examples. In the UK this subject would normally be covered in a Physics lesson.  Can I submit it to the 'Slider examples', or could you possibly do that? 

Thanks, Tim

Ashley Terwilliger

That's it - I never took Physics. Whew! I didn't yet blow the fuse then, so more to play with later. 

I sent it along to my colleague who manages the Examples page to take a look. They get uploaded in spurts so I don't know where it stands on a timeline - but you can always share it as a part of a challenge too. 

Ken Talley

Thanks. I will do that if he doesn’t respond by tomorrow.

Thank you,
Ken Talley, CBNT

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Technical Education Manager
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