[填空题]
Suppose two batteries, with unequal emfs of7d f 0u1yhzbw*(ct ;ow 2.00 V andlf6i+)jj,; ; do(gqj bg;vd md 3.00 V, are connected as shown in (Fdd(,j +vgbj6i q;)m ;;gjldfoig. Below). If each internal resistance is $r\,=\,0.100\Omega$ and $R\,=\,4.00\Omega$, what is the voltage across the resistor R? $V_R$ $\approx$ V (retain two decimal places)
