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Lakhmir Singh Physics Class 10 Solutions Chapter 1 - Electricity

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Last updated date: 09th Apr 2024
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Lakhmir Singh Class 10 Physics Solutions Chapter 1 - Electricity - Free PDF Download

Vedantu.com - No.1 online tutoring company in India provides you the Free PDF download of Lakhmir Singh Physics Class 10 Solutions Chapter 1 - Electricity solved by Expert Teachers. The textbook solutions are to help students to complete their homework and prepare to Score More marks in their exams. Register Online for Class 10 Science tuition on Vedantu.com to do better in the CBSE board examination. 


Vedantu is a platform that provides free CBSE Solutions  (NCERT) and other study materials for students. Maths Students who are looking for better solutions can download Class 10 Maths NCERT Solutions to help you revise the complete syllabus and score more marks in your examinations.

Competitive Exams after 12th Science

Importance of CBSE Class 10 Lakhmir Singh Chapter 1 Solutions

Electricity is the first chapter in the NCERT Physics textbooks for Class 10 students. The chapter suggests that charging a mobile phone using an E-pole will cut the energy cost of the phone. Such concepts will be repeated in the other chapters like electricity, voltage, energy, energy flow, energy conversion, electricity use, energy conservation, energy in the economy, and solar power.


It is mentioned on the lines that E-pole not only assists in charging a mobile phone but also helps in curbing air pollution as the carbon emissions are offset by reducing noise and air pollution. The chapter is written in a simplified way and the right understanding is the problem here.


In the first place, any electricity unit will have a voltage to produce electricity. The electricity in your mobile will be provided by different generators – the wire, generators on the phone, generators on the wall, or generators on the E-pole.

Sections of Chapter 1 - Electricity

1.1 Electric Current and Circuit

1.2 Electric Potential & Potential difference

1.3 Circuit Diagram

1.4 Ohm's Law

1.5 Factors on which the resistance of a conductor depends

1.6 Resistance of a system of resistors

1.7 Heating effect of electric current

 1.7.1 Practical Applications of Heating Effect of Electric Current

1.8 Electric power


List of Exercises in Chapter 1 - Electricity

Exercise 1.1 - 3 questions

Exercise 1.2 - 3 questions

Practical Activity 1.1

Practical Activity 1.2

Practical Activity 1.3

Exercise 1.3 – 5 questions

Practical Activity 1.4

Practical Activity 1.5

Exercise 1.4 - 2 questions

Practical Activity 1.6

Exercise 1.5 - 5 questions

Exercise 1.6 - 3 questions

Exercise 1.7 - 2 questions

Exercise 1.8 - 18 questions


Advantages of referring to NCERT books for Physics

The National Council of Educational Research and Training (NCERT), based in New Delhi, has issued new textbooks for Class 1 to Class 5 to teach children to act respectfully and be aware of all the happenings around them. The new textbooks aim to make the new generation more humane and sensitive towards the world around them even though subjects like science.

Here are the benefits as to why you should refer to NCERT books: 

  1. Regardless of a student's intelligence level, NCERT books are designed for all students. Books like these are intended to clarify and polish your doubts, concepts and to give you a comprehensive understanding of complex topics and subjects.

  2. NCERT books are generally the only source of CBSE Board questions

  3. In NCERT, the most important questions at the end of each chapter are twisted and asked in a board test

  4. The CBSE curriculum is strictly followed by NCERT books

  5. In comparison to reference books, NCERT books offer a clearer understanding of concepts with their easy language 

  6. As a matter of course, CBSE recommends NCERT texts as it makes preparation for exams is easier and smoother

  7. We would recommend that you study NCERT textbooks for a month and select past question papers. This will help you answer questions confidently

  8. The NCERT textbooks are sufficient to score a high percentage in the CBSE exams

Download the solutions for the Class 10 Lakhmir Singh Chapter today and complete your study material. Learn how the experts have managed to answer the questions utilizing the concepts as per the NCERT syllabus. Find out how you can answer these conceptual questions and score well in the exams. 

FAQs on Lakhmir Singh Physics Class 10 Solutions Chapter 1 - Electricity

1. What is an electric charge? Define 1 Coulomb of charge from the Lakhmir Singh Physics Class 10.

The physical property of matter due to which it experiences a force on placing it in an electromagnetic field is called electric charge. There are two types of electric charges, namely, positive and negative charges. The sub-atomic particles that carry positive charges are called protons, and those carrying negative charges are called electrons. A naturally occurring element is always electrically neutral since the total number of electrons in it is equal to the total number of protons in its nucleus.


The SI unit of electric charge is Coulomb. The amount of charge that flows through the unit cross-section of a conductor, when a current of 1 ampere flows through it in one second is called 1 Coulomb.

2. Differentiate between conductors and insulators with reference to Lakhmir Singh Physics Class 10?

The materials that allow electricity to flow through them without any resistance are called conductors. The materials that offer resistance to the flow of electricity through them are called insulators. For example, all metals are conductors of electricity, and most non-metals are insulators. Copper, Aluminium, Silver, Graphite, are the common examples of conductors of electricity. Air, Bakelite, Plastic, Polythene are common examples of insulators.

3. What is Coulomb’s law as explained in Lakhmir Singh Physics Class 10?

Coulomb’s law states that the electrostatic force of attraction or repulsion between any two point charges is directly proportional to the product of their magnitudes and is inversely proportional to the square of the distance between them.

The expression for Coulomb's law is as follows.


F = kq1q2/r2

Where F is the electrostatic force,

q1 and q2 are the point charges

r is the distance between the points charges


And, k is Coulomb’s constant.

4. Which is the best website to download the Lakhmir Singh Physics Class 10 Solutions Chapter-1 Electricity?

Vedantu is the best website to download the Lakhmir Singh Physics Class 10 Solutions Chapter-1 Electricity. Our in-house team of subject-matter experts has prepared these solutions to facilitate an easy learning experience for the students of Class 10. These solutions are available in PDF format on Vedantu and all students can download them for free.

5. What is Ohm's Law as explained in Lakhmir Singh Physics Class 10?

Basically, it is the relationship between the resistance of an electric circuit and the current through that circuit. There are a number of mathematical formulas that attempt to predict the current through a certain circuit, based on its resistance. For example, Ohm's Law is given as

R = I k B T

Where

R = resistive load (light bulb, cord, mouse, etc)

I = current through the load

B = resistive impedance (difference between the medium to wire resistance and nominal load resistance)

T = the time taken for the current to travel through the circuit.

For example, for a light bulb that has a resistance of 60 ohms, with a current of 600mA and a time of 0.7ms,

R = 600 / (600/0.7) = 55 ohms

I = 600 / (0.7)/0.7 = 5.0 ohms

B = 5 ohms

T = 0.7/5 = 5ms


So, given a light bulb with a resistor value of 55 ohms, the current through the bulb is 5.0 ohms. In simple words, Ohm's Law predicts that there will be a current of 5.0 ohms for a time of 5ms. Of course, it is a limited model. If the load is completely blocked, the resistance of the circuit will become zero and the current will stop flowing. 


Since Ohm's Law does not allow the model to handle loads with less than ideal currents, the circuit must be dissipated. One way of doing this is by removing all power sources from the circuit. For example, the light bulb can be removed. When the light bulb is removed, the current through the circuit will be zero. So, since there will be no current, Ohm's Law will not apply. Hence, the current through the circuit will drop to zero, and the light bulb won't provide any current. The line inductors and capacitors will then dissipate the current as heat.