what is the highest and lowest resistance can be secured by combination of 4 coils of resistance
2 ohm ,6ohm,10ohm ,20ohm
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Highest-38 ohm
lowest-60/49=1.224 ohm
lowest-60/49=1.224 ohm
abhi252:
from wher e 69/49 comes from
by applying formula for finding resistance in parallel combination....a while parallel combination of resistances reaults in equivalent resistance lower than the lowest resistance in the combination.
Formula...1/Re=1/R1+1/R2+....1/Rn...where n is the no. of resistances
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