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 $



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