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例1如图1所示的电路中,六个电阻的阻值均相同,由于对称性,电阻R_2上无电流流过.已知电阻R_6所消耗的电功率为1W,则六个电阻所消耗的总功率为( )
Example 1 In the circuit shown in Figure 1, the resistances of the six resistors are the same. Due to the symmetry, no current flows through the resistor R_2. The electric power consumed by the known resistor R_6 is 1W, and the six resistors consume the current. The total power is ()