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                                    200°C1. A resistance wire made from German silver has a resistance of 4.25 2. Calculateof another wire, made from the same material such that its 1m German silver has a resistance of 4.25 9. Calculate the resistanceof cross-section decreases by three times.rom the same material, such that its length increases by 4 times and area151 1bre | 
                            
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Answer»  R = ρl/AR' = ρ(4l)/(A/3) = (ρl/A)(12) = 4.25 × 12 = 51 ohm  | 
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