NCERT Solutions for Class 10 Science Chapter 12
1. What are the topics and sub-topics contained in this chapter?
12.1: Electric Current and Circuit
12.2: Electric Potential and Potential Difference
12.3: Circuit Diagrams
12.4: Ohm's Law
12.5: Factors in Which the Resistance of a Conductor Depends
12.6.1: Resistors in Series
12.6.2: Resistors in Parallel
12.7: Heating Effect of Electric Current
12.8: Electric Power
2. Why are coils of electric toasters and electric irons made of an alloy instead of any pure metal?
A. Coils of electric toasters and electric irons made of an alloy instead of a pure metal because the melting point of an alloy is much higher than a pure metal due to its high resistivity. Alloys do not melt at high temperatures. Hence, alloys are always used in heating appliances such as electric toasters and electric irons etc.
3. How many questions are there in all the exercises of Class 10 Science Chapter 12?
Exercise 12.1 : 3 Questions
Exercise 12.2 : 3 Questions
Exercise 12.3: 5 Questions
Exercise 12.4: 2 Questions
Exercise 12.5: 5 Questions
Exercise 12.6: 3 Questions
Exercise 12.7: 2 Questions
Exercise 12.8: 18 Questions
4. Why should all the Class 10 students refer to the NCERT Solutions for Class 10 Chapter 12?