[填空题]
220 V is applied to two different coqs81mz k zn;pes1j ps d8ln+78nductor pf 4/jpk7ev9is made of the same material. One conductor 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 pp7f jikv/4e9? $P_1$ : $P_2$ = : 1
