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A piece of wire having a resistance Risque into five equal parts.a) How will the resistance of each parof the wire change compared with theoriginal resistance?b) If the five parts of the wire are placed inparallel, how will the resistance of thecombination change?c) What will be ratio of the effectiveresistance in series connection to that ofthe parallel connection? |
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Answer» a. if you BREAK a wire of R resistance in 5 EQUAL parts then the resistance of each part will become R/5 ohm. means it becomes one fifth of original resistance.b. if these equal 5 parts of R/5 ohm are connected in parallel then effective resistance will become (resistance of one part) / (NUMBER of RESISTANCES to be connected in parallel )therefore effective resistance becomes = (R/5)/5 = R/25 ohms c. if 5 resistances of R/5 ohms connected in series and in parallel then their ratio in series and parallel will become series resistance =5(R/5) =Rparallel resistance = (R/5)/5 = R/25therefore series /parallel = 25 or 5^2Explanation: |
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