Resistors Used in College Electrical Circuits Labs - Any Suggestions?

[jcoona]

I am taking an intro electrical circuits course which requires that I write extensive lab reports. I just completed a really simple lab about calculating resistance when configured in series and parallel, etc.

In my intro I'm writing a short explanation about resistance, and resistors, and such. For resistors used in a common college lab course, does anyone have an idea what exact "type" of resistor they might be?

I.E http://www.resistorguide.com/materials/ here are a couple examples of what I mean...I figure they might be one of the film types but I am not sure.

Any suggestions are appreciated! Thank you very much!

 

[phinds]

Probably carbon composition resistors.

EDIT: ... oh, wait ... that shape makes it more likely they are carbon film resistors.

 

[jcoona]

Thank you! I thought so also...based on the tan shell, but I didn't know if shell color was the defining characteristic. Thank you!

 

[CWatters]

I don't think you can rely on the body colour to mean anything although metal film seem to be mostly blue and carbon film are mostly tan/beige.

One or two web sites claim...

blue body = fusible resistor
white body = non-flammable

Would be nice to find confirmation of that.

On very old resistors the body colour was part of the value marking scheme...

Body colour = 1st digit
End colour = 2nd digit
Dot colour = Multiplier