Sunday, February 1, 2009
Topic 2:
You are given a length of copper wire with a small diameter. The only instrument available ot you is the metre ruler. Explain how you would measure the diameter of the wire with an acceptable degree of accuracy.
Solution:
l = nd
l --length of coiled wire
n --number of turns
d --*diameter
*The thickness of the wire is its diameter
Example:
There are 4 turns. The length of the coiled wire is 4 cm.
4 cm = 4 d
d = 1cm
You are given a length of copper wire with a small diameter. The only instrument available ot you is the metre ruler. Explain how you would measure the diameter of the wire with an acceptable degree of accuracy.
Solution:
l = nd
l --length of coiled wire
n --number of turns
d --*diameter
*The thickness of the wire is its diameter
Example:
There are 4 turns. The length of the coiled wire is 4 cm.
4 cm = 4 d
d = 1cm
what we could have been, 4:01 AM.
