The resistance of the series combination of two resistances is S . When they are joined in parallel the total resistance is P. if S = nP then the minimum possible value of n is .
4
3
2
1
As we learnt in
Power dissipiated in external resistance -
-
In series combination,
In parallel combination,
for minimum value
Option 1)
4
This option is correct.
Option 2)
3
This option is incorrect.
Option 3)
2
This option is incorrect.
Option 4)
1
This option is incorrect.
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