In a DC motor, when the coil turns to what position, the commutator can automatically change the direction of the current in the coil________
A. Coil to any position
B. The coil plane is parallel to the magnetic field lines
C. The coil plane is perpendicular to the magnetic field lines
D. The coil plane is at a 45° angle to the magnetic field lines
Answer:C
In a DC motor, when the coil turns to what position, the commutator can automatically change the direction of the current in the coil________
A. Coil to any position B. The coil plane is parallel to the magnetic field lines C. The coil plane is perpendicular to the magnetic field lines D. The coil plane is at a 45° angle to the magnetic field lines