\(R_{tđ}=\dfrac{R_1\cdot R_2}{R_1+R_2}=\dfrac{8\cdot2}{8+2}=1,6\Omega\)
\(I_m=\dfrac{U_m}{R_{TĐ}}=\dfrac{3,2}{1,6}=2A\)
Chọn C.
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\(R_{tđ}=\dfrac{R_1\cdot R_2}{R_1+R_2}=\dfrac{8\cdot2}{8+2}=1,6\Omega\)
\(I_m=\dfrac{U_m}{R_{TĐ}}=\dfrac{3,2}{1,6}=2A\)
Chọn C.
