10 Resistance Wire Boards
This set of 10 wooden boards each with a different 2.0m long wire allows pupils to easily, quickly and effectively investigate the factors affecting resistance.
A whole class of 20 can use this kit to carry out their choice of 3 different experiments. You can either cycle through them across the week or use it as a way to promote investigation skills.
This kit would could also be used by a single AH pupil for a relatively basic project.
The usual problem with such a kit is that using thin wires leads to snapping while longer wires have a low resistance so impractically long wires would be needed.
Our kits solve this problem with machine screws that are electrically in contact with the wires at different positions. The pupils can use crocodile clips to make a secure connection without straining the wires. This should keep costs down and save technicians having to replace wire every year.
A full class set of wire boards fits easily in a standard racking tray.
This set of 10 wooden boards each with a different 2.0m long wire allows pupils to easily, quickly and effectively investigate the factors affecting resistance.
A whole class of 20 can use this kit to carry out their choice of 3 different experiments. You can either cycle through them across the week or use it as a way to promote investigation skills.
This kit would could also be used by a single AH pupil for a relatively basic project.
The usual problem with such a kit is that using thin wires leads to snapping while longer wires have a low resistance so impractically long wires would be needed.
Our kits solve this problem with machine screws that are electrically in contact with the wires at different positions. The pupils can use crocodile clips to make a secure connection without straining the wires. This should keep costs down and save technicians having to replace wire every year.
A full class set of wire boards fits easily in a standard racking tray.
This set of 10 wooden boards each with a different 2.0m long wire allows pupils to easily, quickly and effectively investigate the factors affecting resistance.
A whole class of 20 can use this kit to carry out their choice of 3 different experiments. You can either cycle through them across the week or use it as a way to promote investigation skills.
This kit would could also be used by a single AH pupil for a relatively basic project.
The usual problem with such a kit is that using thin wires leads to snapping while longer wires have a low resistance so impractically long wires would be needed.
Our kits solve this problem with machine screws that are electrically in contact with the wires at different positions. The pupils can use crocodile clips to make a secure connection without straining the wires. This should keep costs down and save technicians having to replace wire every year.
A full class set of wire boards fits easily in a standard racking tray.
Suggested Uses
1 - Each pupil group can work work with a single board and investigate the relationship between wire length and resistance. This will produce a very clear straight line through the origin for all wires.
2 - Pupils can do the above experiment several times (or pool data) to produce a multiplot graph as shown below. They’ll see the relationship is the same but each wire has a different gradient.
3 - Pupils can take turns with the boards, choose one length and then work with either the yellow set (thickness) or the blue set (materials) to investigate a 2nd variable. This challenges pupils to select the correct type of graph too.
4 - Particularly advanced or senior pupils doing assignments could use the equipment to investigate Resitance vs cross sectional area.
