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An introduction to geology
An introduction to geology

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2.19 How much ore for a metre of Cu cable?

How much copper ore do you need for 100 m of cable? 100 m of typical 3-core copper cable for electrical wiring weighs about 2 kg. Using this information, complete the activity below.

Activity 2.4 Cu cable

Timing: Allow about 5 minutes


198 kg


20.2 kg


267 kg

The correct answer is a.


The answer is 198 kg. The calculation required for this is:

two postfix times equation left hand side k times g postfix times o times f postfix times cap c times u postfix times equals right hand side equation left hand side 2000 times g divided by 10.1 postfix times g solidus k times g equals right hand side 198 postfix times k times g postfix times o times r times e