If in the circuit, power dissipation is 150 W, then R is [AIEEE 2002] |
A) \[2\,\,\Omega \]
B) \[6\,\,\Omega \]
C) \[5\,\,\Omega \]
D) \[4\,\,\Omega \]
Correct Answer: B
Solution :
[b] As power \[P=\frac{{{V}^{2}}}{{{R}_{net}}}\] (as V is constant in parallel) |
\[\Rightarrow \] \[150=\frac{{{(15)}^{2}}}{\frac{R\times 2}{2+R}}\Rightarrow R=6\,\,\Omega \] |
You need to login to perform this action.
You will be redirected in
3 sec