A) 0.4 mA
B) 20 mA
C) 63 mA
D) 100 mA
Correct Answer: B
Solution :
From colour code table \[R=50\times {{10}^{2}}=500\,\Omega \] \[Power=2\text{ }watt\] \[2={{i}^{2}}R\] \[2={{i}^{2}}\times 5000\] \[\frac{0.4}{1000}\,=\,{{i}^{2}}\] \[i\,\,=\,\,\frac{2}{100}\,Amp\,\,=\,\,20\,mA\]You need to login to perform this action.
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