A ten loop coil of area 0.23 m2 is in a 0.047 T uniform magnetic field oriented so that the maximum flux goes through the coil. The coil is then rotated so that the flux through it goes to zero in 0.34 s.
The average emf induced in the coil during the 0.34 s is A)
3.2 10-3 V.
B)
0.
C)
3.2 10-2 V.
D)
3.2 10-1 V.
E)
1.0 V.
Question 2
The force on a current-carrying wire in a magnetic field is equal to zero when
A)
the current is parallel to the field lines.
B)
the current is at a 30 angle with respect to the field lines.
C)
the current is at a 45 angle with respect to the field lines.
D)
the current is at a 60 angle with respect to the field lines.
E)
the current is perpendicular to the field lines.
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