如图所示正弦稳态电路中,
\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n \n\n \n \n 则4\n \nΩ\n \n \n电阻所获得的功率P=(____) W。\n\n

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n \n\n \n \n 则4\n \nΩ\n \n \n电阻所获得的功率P=(____) W。\n\n