Electro Magnetic Induction And Alternating Currents Question 102
Question: An ac supply gives 30 V r.m.s. which passes through a 10 $ \Omega $ resistance. The power dissipated in it is [AMU (Med.) 2001]
Options:
A) $ 90\sqrt{2},W $
B) $ 90,W $
C) $ 45\sqrt{2},W $
D) $ 45,W $
Show Answer
Answer:
Correct Answer: B
Solution:
$ P=\frac{V_{rms}^{2}}{R}=\frac{{{(30)}^{2}}}{10}=90\ W $
