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The resistivity's of some substances are given below: Material А B C D E Resistivity (m) 1.6x10 6.4x10* 10x10* 96 x 10 100x10 Answer the following questions in relation to them giving justification for each: D Which material is best for making connecting cords? ii) Which material do you suggest to be used in beater elements? iii) You have two wires of same length and same thickness. One is made of material A and another of material D. If the resistance of wire of A is 2 Q. what is the resistance of the other wire? |
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Answer» Glaciers are melting, SEA levels are rising, cloud forests are dying, and wildlife is scrambling to keep pace. It has become clear that humans have caused most of the past century's WARMING by releasing heat-trapping gases as we POWER our modern lives. CALLED greenhouse gases, their levels are higher now than at any time in the last 800,000 years. |
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