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ICSE Class 9 Answered

equivalent resitance  
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Asked by drshaliniverma24 | 14 Sep, 2020, 10:12: PM
answered-by-expert Expert Answer
Some points are marked as C, D, E and F as shown in given figure in order to get proper circuit.
Figure-1 gives the proper circuit with the help of these markings. Twist of circuit connections in figure-1 is made straight
and Figure-2 is drawn after straightning the twist. 
 
Now it is easy to get total resistance from figure-2 . Across the points C and F , three resistances 2R are connected in parallel.
 
Hence equivalent resistance of parallel combination of three 2R resistances = (2/3)R 
 
Hence total resistance in the circuit as can be seen from figure-3  = R + (2/3)R + R = (8/3) R
Answered by Thiyagarajan K | 14 Oct, 2020, 09:20: AM

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