# NCERT Solutions for Class 10 Science Chapter 12 Free PDF Download

## NCERT Solutions for Class 10 Science Chapter 12 Electricity

Toppr.com is one of the leading online tutoring company in India that provides you all the NCERT class 10 solutions free of cost. NCERT Solutions for Class 10 Science Chapter 12 are prepared by the experts that are based on the NCERT textbook guidelines. All the chapter 12 science class 10 questions along with solutions can help you revise the complete syllabus and get more marks. For a better understanding of the questions given in the exercise, download the NCERT solutions PDF given in the link below.Â

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Download NCERT Solutions for all the chapters of Class 10 Science here.

### CBSE Class 10 Science Chapter 12 Electricity NCERT Solutions

Chapter 12 science class 10 comes under the theme of how things work. The NCERT solutions for class 10 science chapter 12 are provided in a framed manner. Also, our subject experts provide the gist of all the chapters in a very simple manner. This chapter will help students understand concepts like how does the current flow in an electric circuit, constituents of electricity, factors regulating the electric current, etc.

Furthermore, topics like Ohm’s law, circuit diagram, have been described along with the help of descriptive diagram and practical activities. Thus, the solutions to these questions aid in building strong concepts for the learner. Also, the guided solutions that are provided for the topic heating effect of electric current helps the learners in understanding the application of Ohm’s law and Joule’s law.Â

You will get 100 percent accurate NCERT solutions for class 10 science chapter 12 science explained by our subject experts. Also, we will provide the solutions in step by step for the questions mentioned in the class 10 science textbook.

### Sub-topics covered under NCERT Solutions for Class 10 Science Chapter 12

• Ex 12.1 – Electric Current And Circuit
• Ex 12.2 – Electric Potential And Potential Difference
• Ex 12.3 – Circuit Diagram
• Ex 12.4 – Ohmâ€™s Law
• Ex 12.5 – Factors On Which The Resistance Of A Conductor Depends
• Ex 12.6 – Resistance Of A System Of Resistors
• Ex 12.6.1 – Resistors In Series
• Ex 12.6.2 – Resistors In Parallel
• Ex 12.7 – Heating Effect Of Electric Current
• Ex 12.7.1 – Practical Applications Of Heating Effect Of Electric Current
• Ex 12.8 – Electric Power

### NCERT Solutions for Class 10 Science Chapter 12 Electricity

Q 1. Does short-sightedness or long-sightedness imply necessarily that the eye has partially lost its ability of accommodation? What might cause the defects of vision?

Solution:- A myopic or hypermetropic person can also possess the normal ability of accommodation of the eye lens. Myopia occurs when the eye-balls get elongated from front to back. Hypermetropia occurs when the eye-balls get shortened. When the eye loses its ability of accommodation, the defect is called presbyopia.Â

Q 2. A person is looking at another person wearing a shirt with a pattern comprising of vertical and horizontal lines. He is able to see the vertical lines more distinctly than the horizontal ones. What is this defect due to?Â

Solution:- The person is suffering from Astigmatism. It is a defect caused due to the imperfection. In this defect, a person is able to focus objects within one direction only.

Q 3. The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?Â

Solution:- The person is suffering from myopia and hence need a concave lens to correct the defect. The lens should be such that an object at infinity must form its image at the far pointÂ

Hence, f= -80 cm

P=1/f = 1/(-0.8) = -1.25D

Q 4. Why is a normal eye not able to see clearly the objects placed closer than 25 cm?Â

Solution:- Ciliary muscles contract and expand to change the focal length of the eye lens so that it is able to see objects at variable distances. However, too much contraction lays a lot of stress on the eye muscles and when objects are closer than the near point, the eye is unable to focus its image on the retina.

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