A) 20
B) 8 n
C) 12 n
D) 16 n
Correct Answer: C
Solution :
Input power \[P=Vi\] \[=200\times 10=2000\text{ }W\] Output power\[=\frac{40}{100}\times 2000\] \[=800W\] Power dissipated \[=2000-800\] \[=1200W\] \[{{i}^{2}}R=1200\] \[R=\frac{1200}{{{i}^{2}}}\] \[=\frac{1200}{10\times 10}\] or \[R=12\,\Omega \]You need to login to perform this action.
You will be redirected in
3 sec