This video is about Resistivity, what happens when the cross sectional area of cable changes. What does type of conductor and length do to resistance. This can be applied to fault finding if you know the resistance, conductor type and CSA, then you can find the distance to the fault - just rearrange the formula.
Discover what Rho is and apply to all electrical principles exams great for all level 2 or 3 electrical qualifications.
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