Đáp án:
\(\begin{array}{l}
1.\\
a.\\
{U_1} = 20000V\\
b.\\
{P_{hp}} = 1000000W\\
2.\\
{U_2} = 9V
\end{array}\)
Giải thích các bước giải:
\(\begin{array}{l}
1.\\
a.\\
\frac{{{U_1}}}{{{U_2}}} = \frac{{{N_1}}}{{{N_2}}}\\
\frac{{{U_1}}}{{100000}} = \frac{{1000}}{{5000}}\\
{U_1} = 20000V\\
b.\\
{P_{hp}} = \frac{{{P^2}R}}{{{U_2}^2}} = \frac{{{{10000000}^2}.100}}{{{{100000}^2}}} = 1000000W\\
2.\\
\frac{{{U_1}}}{{{U_2}}} = \frac{{{N_1}}}{{{N_2}}}\\
\frac{{220}}{{{U_2}}} = \frac{{4400}}{{180}}\\
{U_2} = 9V
\end{array}\)
