A.\(\frac{{\sqrt 2 }}{2}\)  
B.0
C.1
D.\(\frac{{\sqrt 3 }}{2}\)

A.\(60{\rm{ }}mWb\)  
B.\(7,5{\rm{ }}mWb\)
C.\(15{\rm{ }}mWb\)
D.\(120{\rm{ }}mWb\) .

A.\({3.10^5}rad/s.\)  
B.\({2.10^5}rad/s\)  
C.\({10^5}rad/s\)  
D.\({4.10^5}rad/s\)

A.\(60m.\)   
B.\(6m.\)
C.\(0,6m.\)
D.\(600m.\)

A.\(630V\)
B.\(70V\)  
C.\(105V\)  
D.\(0\)

A.0.
B.10cm/s.
C.15cm/s.
D.20cm/s.

A.\(0,30\mu m\)
B.\(0,40\mu m\)
C.\(0,90\mu m\)
D.\(0,60\mu m\)

A.8
B.3.
C.4.
D.6

A.\(5,{2.10^{24}}MeV\)   
B.\(1,{3.10^{24}}MeV\)  
C.\(2,{6.10^{24}}MeV\)  
D.\(2,{4.10^{24}}meV\)

A.\(120\pi ra{\rm{d}}/s\)
B.\(100\pi ra{\rm{d}}/s\)  
C.\(150\pi ra{\rm{d}}/s\)  
D.\(50\pi ra{\rm{d}}/s\)