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NCERT Solutions for Class 7 Science Chapter 14 Electric Current and its Effects are provided in this article. The important topics covered in the chapter include Symbols of Electric Components, Heating Effect of Electric Current, Magnetic Effect of Electric Current, and Electromagnet.
Download PDF: NCERT Solutions for Class 7 Science Chapter 14 Electrical Current and Its Effects
NCERT Solutions for Class 7 Science Chapter 14
NCERT Solutions for Class 7 Science Electric Current and its Effects: Important Points
Electric Current is the flow of charged particles through a conducting medium, like a wire.
- Heating Effect of Electric Current: The conductor becomes hot after some time and produces heat when an electric current is passed through a conductor. This takes place as a result of the conversion of some electric energy passing through the conductor into heat energy. This effect of electric current is known as the heating effect of current.
- Magnetic Effect of Electric Current: When an electric current passes through a wire, it behaves like a magnet, which is the magnetic effect of the electric current. The electric current loses its magnetic effect if it does not passes through. These coils of wire are called electromagnets.
- Electromagnet: An electromagnet is a device that comprises a core of magnetic material surrounded by a coil through which an electric current is passed to magnetize the core.
- An electromagnet is used wherever controllable magnets are required, as in contrivances wherein the magnetic flux is to be varied, reversed, or switched on and off.
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