\(R_{Đ1}=\dfrac{U^2_{Đ1}}{P_{Đ1}}=\dfrac{12^2}{6}=24\Omega\)
\(R_{Đ2}=\dfrac{U^2_{Đ2}}{P_{Đ2}}=\dfrac{6^2}{4,5}=8\Omega\)
\(R_{tđ}=\dfrac{R_{Đ1}\cdot\left(R_b+R_{Đ2}\right)}{R_{Đ1}+R_b+R_{Đ2}}=9,6\Omega\)
\(I_m=\dfrac{\xi}{r+R_{tđ}}=1,25A\)
\(U_N=U_1=U_{2b}=1,25\cdot9,6=12V\)
\(U_1=U_{Đ1}=12V\)\(\Rightarrow\)ĐÈN 1 SÁNG BÌNH THƯỜNG.
\(I_2=\dfrac{U_{b2}}{R_{b2}}=\dfrac{12}{16}=0,75A\)
\(\Rightarrow U_2=0,75\cdot8=6V=U_{Đ2}\)
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