Tóm tắt:
${{N}_{1}}=500$ vòng
${{N}_{2}}=50000$ vòng
${{U}_{1}}=2000\,V$
$P=1000\,kW\,=\,1000000\,W$
- a) ${{U}_{2}}=?$
- b) $R=200\,\Omega $. ${{P}_{hp}}=?$
…………………………………………..
- a) $\dfrac{{{U}_{1}}}{{{U}_{2}}}=\dfrac{{{N}_{1}}}{{{N}_{2}}}$
$\to {{U}_{2}}=\dfrac{{{U}_{1}}\,.\,{{N}_{2}}}{{{N}_{1}}}=\dfrac{2000\,.\,50000}{500}=200000\,V$
- b) ${{P}_{hp}}=R.{{\left( \dfrac{P}{U} \right)}^{2}}$
$\to {{P}_{hp}}=200\,.\,{{\left( \dfrac{1000000}{200000} \right)}^{2}}=5000\,W$
