A) 3.2W
B) 8.2W
C) 4 W
D) 2 W
Correct Answer: D
Solution :
Key Idea: In pardllel combination positive poles of all cells are connected to one point and negative poles to another point. The resistances of \[1\,\Omega \] are connected in parallel hence, equivalent resistance of combination is \[{{r}_{eq}}=\frac{1\times 1}{1+1}=0.5\] From Ohms law, \[E=i(R+r)\] \[\therefore \] \[i=\frac{2}{0.5+0.5}=2A\] Power is given by \[P={{i}^{2}}R={{(2)}^{2}}\times 0.5=2W\]You need to login to perform this action.
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