A) 37.5 W
B) 25 W
C) 12.5 W
D) 10 W
Correct Answer: C
Solution :
We know that \[R=\frac{{{V}^{2}}}{P}\] Given \[V=200V,\,P=40\,W\] and \[V=100\,V\] Hence, \[R=\frac{{{V}^{2}}}{P}=\frac{200\times 200}{50}\] \[P=\frac{{{V}^{2}}}{R}=\frac{100\times 100\times 50}{200\times 200}\] \[P=12.5\,W\]You need to login to perform this action.
You will be redirected in
3 sec