A.\(2\)
B.\(3\)
C.\(4\)
D.\(5\)

A.\({z_2} = 5 - 3i\)
B.\({z_3} =  - 5 - 3i\)
C.\({z_4} =  - 5 + 3i\)
D.\({z_1} = 5 + 3i\)

A.\(\left( { - 4;4} \right)\)
B.\(\left( {4; + \infty } \right)\)
C.\(\left( { - 4; + \infty } \right)\)
D.\(\left( { - \infty ;4} \right)\)

A.\(y = 2\)
B.\(y = 3\)
C.\(y =  - 2\)
D.\(y =  - 3\)

A.\(5\)
B.\(9\)
C.\(1\)
D.\(4\)

A.Tia \({\beta ^ + }\)
B.Tia \(\alpha \)
C.Tia \({\beta ^ - }\)
D.Tia \(\gamma \)

A.\({I_0} = \frac{{U\sqrt 2 }}{R}\)
B.\({I_0} = RU\)
C.\({I_0} = \frac{u}{R}\)
D.\({I_0} = \frac{U}{R}\)

A.\(50\sqrt 2 V\)
B.\(50V.\)
C.\(100\sqrt 2 V\)
D.\(100V\)

A.\(2\)
B.\(1\)
C.\(3\)
D.\(0\)

A.\(\overrightarrow {{u_2}}  = \left( {8;6;7} \right)\)
B.\(\overrightarrow {{u_4}}  = \left( {4;3;3} \right)\)
C.\(\overrightarrow {{u_3}}  = \left( {1;1;2} \right)\)
D.\(\overrightarrow {{u_1}}  = \left( {2;2;5} \right)\)