a) Heating effects of electric current: 

1. The production of heart due to the flow of electricity through a wire is called heating effects of electricity. 

2. Electric devices like electric stoves, room heaters, iron boxes, electric kettles, electric cookers, heaters, geysers, hair dryers work on the principle of heating effects of electric current. 

3. All these appliances contain a heating element is called a filament. 

4. Generally, a filament is made up of Nichrome in iron boxes and the filaments of an electric bulb is made of Tungsten. 

b) Magnetic effects of electric current: 

1. The production of magnetic force due to the flow of electricity through a wire is called magnetic effect of electricity. 

2. The devices which act as magnets when electricity passes through them are called electromagnets. 

3. The electric devices like loudspeakers, fan, bell, motor, mixer grinders, MRI machines, generators, metal detectors, mobile phones work on the principle of magnetic effect of electricity. 

4. Magnetic effects produced in a coil which is wound around a soft iron due to the passing of electricity in the coil.