6. A simple motor is made in a school laboratory. A coil of wire is mounted on an axle between the poles of a horseshoe magnet, as illustrated. In the example above, coil ABCD is horizontal and the battery is connected as shown.
(a) What is the principle of an electric motor?
(b) What is the role of the split ring in an electric motor?
Answers
Answer:
A)
An electric motor works on the principle that when a rectangular coil is placed in a magnetic field and a current is passed through it, a force acts on the coil which rotates it continuously. Hence, electrical energy is converted into mechanical enerrgy.
B)
The split ring is used to reverse the coil's current direction. The coil's current must be reversed in order for it to continue rotating in the same direction. As a result, the direction of the couple rotating the coil remains the same after every half rotation, and the coil continues to rotate in the same direction.
PLS MARK ME BRAINLIEST
GOD BLESS YOU
ANSWER
a. downwards
b.because BC is in the same direction as the direction of field lines. Force is minimum when the direction of current in the conductor is the same as that of the magnetic field BC will not contribute as the force on the coil will be canceled by the force on DA