How will you connect three resistores of 2ohm,3ohm and 5ohm to obtained 2.5ohm
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connect 2 and 3 ohm resistors in series combination, then total resistance= (2+ 3) = 5 ohm.
Now,connect it in parallel combination with 5 ohm resistors.
then,total resistance(1/R) = 1/5+1/5= 2/5
R= 5/2= 2.5 ohm
Now,connect it in parallel combination with 5 ohm resistors.
then,total resistance(1/R) = 1/5+1/5= 2/5
R= 5/2= 2.5 ohm
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