[填空题]
220 V is applied to two different conductors made of thr wud()7 yxpr/viu.d fxcp.28ed lt 4uw/y6 hig7i-ma) same material. One conductoh/-iu6lwm d ) i7ayg4tr is twice as long and twice the diameter of the second. What is the ratio of the power transformed in the first relative to the second? $P_1$ : $P_2$ = : 1
