How to Connect Decade Resistance Boxes in Parallel and Series?

[mopar969]

We did a lab with decade resistance boxes. We had to set up three boxes of the same resistance in parallel. However, I am confused as to how to connect the cords. We used an ammeter to measure the current and a dc voltage machine. Can someone please show a diagram on how to hook up the boxes with maybe a picture. I know that on the last box one end of the box had 3 cords in it why?

 

[berkeman]

We did a lab with decade resistance boxes. We had to set up three boxes of the same resistance in parallel. However, I am confused as to how to connect the cords. We used an ammeter to measure the current and a dc voltage machine. Can someone please show a diagram on how to hook up the boxes with maybe a picture. I know that on the last box one end of the box had 3 cords in it why?

Can you show us which one you were using?

http://www.google.com/images?hl=en&source=hp&q=resistor+decade+box&gbv=2&aq=f&aqi=&aql=&oq=

.

 

[mopar969]

This one:

 

[berkeman]

This one:

So to connect them in parallel, you'd connect all 3 boxes' red terminals together for one side, and all 3 boxes' black terminals toghether for the other side of the resistance. What did you mean about 3 wires on the last box?

 

[mopar969]

So then the middle resistor will have two wires on both the red and black terminal and one terminal on each of the other resistors will have two wires for the leads. Is this correct?

 

[SammyS]

Then you need to make connections to the power source and to the ammeter.

 

[mopar969]

How would the wiring look if there were 2 of the boxes in parallel and one of them in series?