[单选题]
In the circuits below, all resistors have the same riet.j (g o 1xbj3p7j3s0g /vxh *ub-asesistance, ana9tu xd) ng7)zot:g:zd the cells do not have internal resisttgzod:a))z x 97:nutgance. The emf of the cell in circuit 1 is $E_1$ while it is $E_2$ in circuit 2.
All resistors dissipate the same power. Which of the following gives the ratio $\frac{E_1}{E_2}$