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ICSE Class 10 Answered

7th ques
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Asked by lovemaan5500 | 13 Jan, 2018, 05:48: PM
answered-by-expert Expert Answer
Let Re is the equivalent resistance for 5 resistances each of value R connected in parallel. If all resistances are connected in parallel then the equivalent resistance will be th e minimum resistance.
begin mathsize 12px style 1 over R subscript e space equals space 1 over R plus fraction numerator begin display style 1 end style over denominator begin display style R end style end fraction plus fraction numerator begin display style 1 end style over denominator begin display style R end style end fraction plus fraction numerator begin display style 1 end style over denominator begin display style R end style end fraction plus fraction numerator begin display style 1 end style over denominator begin display style R end style end fraction space equals space 5 over R t h e n space R subscript e space equals space R over 5 space semicolon space i f space R space equals space 1 fifth capital omega comma space t h e n space R subscript e space equals space fraction numerator begin display style bevelled 1 fifth end style over denominator 5 end fraction space equals 1 over 25 capital omega end style
Answered by Thiyagarajan K | 13 Jan, 2018, 06:11: PM
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