Question

Answer 1

a)\(R_1=\dfrac{U_1}{I_1}=\dfrac{10}{3}\Omega\)

\(R_2=\dfrac{U_2}{I_2}=\dfrac{40}{2,5}=16\Omega\)

\(R_3=\dfrac{U_3}{I_3}=\dfrac{30}{1}=30\Omega\)

c)Khi hđt \(U=15V\) thì dòng điện lần lượt là:

\(I_1=\dfrac{U}{R_1}=\dfrac{15}{\dfrac{10}{3}}=1,5A\)

\(I_2=\dfrac{U}{R_2}=\dfrac{15}{16}A\)

\(I_3=\dfrac{U}{R_3}=\dfrac{15}{30}=0,5A\)