What is the maximum resistance which can be made using 5 resistors each 1/ 5 Ohm?
1 Ohm
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It is know to us , combining resistances in parallel reduces equivalent resistance and combining resistances in series increases equivalent resistance.
To get maximum possible resistance, one has to combine all 5 resistors in series.
R
max
=R
1
+R
2
+R
3
+R
4
+R
5
R
max
=R+R+R+R+R=5R
R
max
=5×
5
1
=1Ω
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