Điện năng truyền tải đi xa thường bị hao phí chủ yếu d
A.\({P_{hp}} = R.\frac{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}{{{P^2}}}\)
B.\({P_{hp}} = R.\frac{{{U^2}}}{{{{\left( {P.co{\rm{s}}\varphi } \right)}^2}}}\)
C.\({P_{hp}} = {R^2}\frac{P}{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}\)
D.\({P_{hp}} = R.\frac{{{P^2}}}{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}\)
A.\({P_{hp}} = R.\frac{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}{{{P^2}}}\)
B.\({P_{hp}} = R.\frac{{{U^2}}}{{{{\left( {P.co{\rm{s}}\varphi } \right)}^2}}}\)
C.\({P_{hp}} = {R^2}\frac{P}{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}\)
D.\({P_{hp}} = R.\frac{{{P^2}}}{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}\)
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Hóa Học lớp 12
