What is a solenoid? Draw the magnetic field due to current in a solenoid.

Sol. A coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a solenoid.
Page Number of the NCERT Science.10 Textbook - 232
2. What is the function of split rings in an electric motor? TP.17
Or What is the role of the split rings in an electric motor?
Sol. The split ring in the electric motor also known as a commutator reverses the direction of current flowing through the coil after every half rotation of the coil. Due to this the coil continues to rotate in the same direction.
2. W? TP.17

Sol. T

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