Define

(1) Magnetic field

(2) Solenoid

(3) Electric motor

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Solution

(1) Magnetic field: The region around a magnet, in which the force of attraction and repulsion is experienced by another magnet is known as ‘magnetic field’.
(2) Solenoid: A coil of many turns of insulated copper wire wrapped around a material or vacuum in the form of a tightly packed helix is known as solenoid.

(3) Electric motor: An electric motor is a rotating device that converts electrical energy into mechanical energy. A number of household devices such as fans, mixers, grinders, washing machines etc. consist of a motor.

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