My son has been tasked with constructing a wheatstone bridge. I think he understands the basic physics and the math behind it, but he has never built ANY sort of electronics previously. We have several questions:
1. can he just assemble this on a breadboard? (it's not a long-term exhibit, just to demonstrate the properties)
2. his teacher wants him to actually 'make' resistors - no idea how to do this, and he's not finding anything online...especially as three of these need to be of known and identical resistance (don't they??) - can these just be made out of copper wire? metal plates?
3. in a real, working WB, one of the resistors needs to be variable, right?? I assume he's not going to have to recreate a 'decade box', but if so, any thoughts on how to go about this?
Any sources or tips on getting started would be most welcome. He is really struggling to figure all of this out quickly. Thanks!
1. can he just assemble this on a breadboard? (it's not a long-term exhibit, just to demonstrate the properties)
2. his teacher wants him to actually 'make' resistors - no idea how to do this, and he's not finding anything online...especially as three of these need to be of known and identical resistance (don't they??) - can these just be made out of copper wire? metal plates?
3. in a real, working WB, one of the resistors needs to be variable, right?? I assume he's not going to have to recreate a 'decade box', but if so, any thoughts on how to go about this?
Any sources or tips on getting started would be most welcome. He is really struggling to figure all of this out quickly. Thanks!