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 30e angle with respect to the field lines.
C. the current is at a 60e angle with respect to the field lines.
D. the current is perpendicular to the field lines.
Answer:A
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 30e angle with respect to the field lines. C. the current is at a 60e angle with respect to the field lines. D. the current is perpendicular to the field lines.