The circuit above has R1 = 820 ̑, R2 = 220 ̑, R3 = 470 ̑, R4 = 910 ̑, R5 = 560 ̑, R6 = 330 ̑, and R7 = 680 ̑ and an equivalent resistance looking into points A and B of RAB = 2244.8 ̑. The voltage applied to the circuit is VAB = 100 V. Determine the power dissipated by R2.