1.

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]

A.   \[90\sqrt{2}\,W\]      
B.   \[90\,W\]
C.   \[45\sqrt{2}\,W\]      
D.   \[45\,W\]
Answer» C.   \[45\sqrt{2}\,W\]      


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