CBSE Class 12 Physics Electric Charges and Fields Formula

Formula

CBSE Class 12 Physics Electric Charges and Fields Formula

Last updated date: 17th Apr 2024

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CBSE Class 12 Physics Chapter 1 - Electric Charges and Fields Formulas - Free PDF

Free PDF download of Physics Class 12 Chapter 1 - Electric Charges and Fields Formulas Prepared by Expert Teachers at Vedantu. To Register Online Physics Tuitions on Vedantu.com to clear your doubts from our expert teachers and solve the problems easily to score more marks in your CBSE Board exams.

Important Formulas Related to Electric Charges and Fields

Description	Formula
Electric Current	= Electric charge/time
Electric Current and its Quantisation	q = ne, where n = 1, 2, 3, …, e = 1.6 × 10-19 C
Coulomb’s Law	F = [\frac{1}{4\prod \sum _{0}}.\frac{q_{1}q_{1}}{r_{1}}] newton
Superposition Principle	[F_{k}=\frac{F}{K}] newton, [\vec{f}=\vec{f_{1}}+\vec{f_{2}}+\vec{f_{3}}+\vec{f_{4}}+.....]
Electric Field [\vec{E}]	[\vec{E}=\frac{\vec{F}}{q_{0}}] newton/coulomb Where q0 = test charge, [\vec{F}] is the force acting on unit charge.
Result of Millikan’s Experiment	qE = mg
Electric Field Intensity	[E=\frac{1}{4\prod \sum _{0}}.\frac{q}{r^{2}}] newton/coulomb
Electric Dipole Moment	[\vec{p}=q\times 2\vec{l}]
Intensity of the Electric Field at a Point on the Axis of a Dipole	E = [\frac{1}{4\prod \sum _{0}}.\frac{2p}{r_{3}}] newton/coulomb
Intensity of the Electric Field at a Point on the Equatorial Line of a Dipole	E = [\frac{1}{4\prod \sum _{0}}.\frac{p}{r_{3}}] newton/coulomb
Torque on a Dipole in a Uniform Electric Field	τ = pEsin θ newton-metre (in scalar form) [\vec{\tau}=\vec{p}\times\vec{E}] newton-metre (in vector form)
Continuous Charge Distribution	1. Surface charge density [\sigma =\frac{\Delta Q }{\Delta S}] 2. Linear charge density [\lambda =\frac{\Delta Q }{\Delta l}] 3. Volume charge density [\rho =\frac{\Delta Q }{\Delta V}]
Gauss’s Law	[\Delta \Phi =E.\Delta S] [\Delta \Phi =\frac{q}{4\prod \sum _{0}r^{2}}\Delta S]
Field Due to an Infinitely Long Straight Uniformly Charged Wire	[E=\frac{\lambda }{2\prod \sum _{0}r}]
Field Due to a Uniformly Charged Infinite Plane Sheet	[E=\frac{\sigma }{2\varepsilon _{0}}]
Field Due to a Uniformly Charged Thin Spherical Shell	1. Field outside the shell [E=\frac{\sigma R^{2}}{\varepsilon _{0}r^{2}}=\frac{q}{4\pi \varepsilon _{0}r^{2}}] 2. Field inside the shell E = 0

These are the list of most important formulas for Electric Charges and Fields. You can also download the PDF of formulas absolutely free of cost and study anywhere and anytime.

Important Formulas of Electric Charges and Fields - Chapter 1

It is very necessary to have a complete list/PDF of important formulas of any chapter for last-minute quick revision. In this article, we have provided a detailed formula list of Electric Charges and Fields to revise related formulas quickly. And, when students sit in the exam they are confident enough to solve all numerical problems related to the chapter. Students can also revise Chapter 1 by using revision notes of chapter 1 Electric Charges and Fields Physics Class 12 provided on our website.

Students appearing for the final board exam or any entrance exam can revise the complete syllabus of Physics using the Complete revision notes of Class 12 Physics available on our website.

FAQs on CBSE Class 12 Physics Electric Charges and Fields Formula

1. Where can I find formulas for Class 12 Physics Chapter 1 - Electric Charges and Fields?

Vedantu provides formulas for Class 12 Physics Chapter 1 Electric Charges and Fields. Students can avail the PDF file for Class 12 Physics Chapter 1 Electric Charges and Fields Formula on Vedantu’s platform. The free PDF version allows students to download the file and refer to the same anytime. These formulas are also explained with relevant examples and the derivations are also given. The study material designed by expert Physics tutors helps students in scoring well in the paper. It helps students to avail all the formulas at one place. With the help of Vedantu’s Class 12 Physics Chapter 1 Electric Charges and Fields, students can score well in the exam.

2. Why should I download Vedantu’s formulas for Class 12 Physics Chapter 1 Electric Charges and Fields?

Many Class 12 Science students are dreaded by Physics as the subject is based on high order thinking and problem-solving abilities. However, with a thorough understanding of concepts and regular practice, scoring well in the Physics paper in the board examination will not be difficult. Class 12 Physics Chapter 1 Electric Charges and Fields is based on the understanding of formulas. Hence, it is important to have a good command of the formulas. Students must download the free PDF file of formulas of the chapter along with explanations by experts from Vedantu’s site. Vedantu provides this study material to help students avail all the important formulas related to the chapter at one place. This will help students practice the chapter in a better manner and prepare for the exam effectively. You can also find solutions for the chapter provided by experts to clear all your doubts related to the chapter.

3. What will students learn from the formulas of Class 12 Physics Chapter 1 Electric Charges and Fields?

The formulas of Chapter 1 of Class 12 Physics Electric Charges and Fields will help students to solve the linear charge density of an infinite line charge and many other questions regarding the electric field. In this chapter, students will learn how to calculate forces between two charged particles which are kept at a certain distance from each other. Apart from the formula based concepts, students will also get to know many interesting facts such as the charge appearing in materials due to rubbing against each other just like when we rub a glass rod with a silk cloth or a dry comb on our hair. There are many takeaways from the chapter and hence, students are encouraged to solve the exercise questions properly. Referring to Vedantu’s Class 12 Physics Chapter 1 formulas will help to do the same.

4. What is Coulomb’s Law? What is the formula to calculate the force between two point charges?

As per the Coulomb’s Law, when the linear size of charged bodies are much smaller the distance separating them, the charged bodies are treated as point charges. Coulomb measured the force between the two point charges. Mathematically, the force (F) between the two point charges can be calculated as:

F = k |q₁ q₂|/r²

Here, q₁ q₂ are point charges and r is the distance in a vacuum.