NCERT Grade 7 Science Chapter 14, Electric Current and its Effects deals with the basic of electric circuit, heating and magnetic effect of electric current and its applications.The chapter begins with a revision of the lessons learnt in previous classes. Symbols used to draw a circuit diagram on paper are explained in the first section of the chapter, Symbols of Electric Components. A tabular format helps to learn the symbols at a glance.
The next section of the chapter, Heating Effect of Electric Current discusses why a wire gets hot when electricity is passed through it. With the help of activities and images this section further explains the working of a bulb filament, fuse and MCBs.Magnetic Effect of Electric Current, wherein contribution by eminent physicist Hans Oersted is mentioned discusses the presence of a magnetic field near a wire conducting electric current.
NCERT Grade 7 Science Chapter 14, Electric Current and its Effects concludes by discussing the applications of Magnetic Effect of Electric Current in Electromagnet and an Electric Bell. Working mechanism of these two devices is explained in a simple manner with the help of images for better understanding.Technical terms such as battery, electromagnet, fuse, etc. are introduced to the students that shall help them in the future while dealing with different phenomena associated to materials.
Get 100 percent accurate NCERT Solutions for Class 7 Science Chapter 14 (Electric Current and Its Effects) explained by expert Science teachers. We provide solutions for the questions given in Class 7 Science textbook as per CBSE Board guidelines from the latest NCERT book for Class 7 Science. The topics and sub-topics in Chapter 14 Electric Current and Its Effects are given below.
Ex 14.1 - SYMBOLS OF ELECTRIC COMPONENTS
Ex 14.2 - HEATING EFFECT OF ELECTRIC CURRENT
Ex 14.3 - MAGNETIC EFFECT OF ELECTRIC CURRENT
Ex 14.4 - ELECTROMAGNET
Ex 14.5 - ELECTRIC BELL.
We cover all questions in the chapter given below:-
Chapter 14 - 13 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Electric Current and Its Effects. Download the free PDF of Chapter 14 Electric Current and Its Effects and take the print out to keep it handy for your exam preparation.