[单选题]
12.14: For the circuit shown to the right,n 5ucfvpw : xyl/(g.d5 what is the equik ky8 ihjk mx*r29gm)+valent resistance? Assume that all wires are ideal, the battery has nkmg)+2ij kr8kyx9h *m o internal resistance, and all three resistors have identical resistance R.
