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Physics – Electrostatic Potential and Capacitance

IIT JEE Main | Advanced | BITSAT | SAT | NEET | AP Physics | MSAT | MCAT | Course for high school, college
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9.9

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Platform: Udemy
Video: 2h 8m
Language: English
Next start: On Demand

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CourseMarks Score®

9.1 / 10

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9.9 / 10
This course was last updated on 3/2022.

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Content Score

7.8 / 10
Video Score: 7.9 / 10
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Table of contents

Description

Electrostatic Potential and Capacitance
•Electric potential, potential difference, electric potential due to a point charge, a dipole and system of charges
•Equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field
•Conductors and insulators, free charges and bound charges inside a conductor
•Dielectrics and electric polarisation, capacitors and capacitance, combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor.
SUMMARY
1. Electrostatic force is a conservative force. Work done by an external force (equal and opposite to the electrostatic force) in bringing a charge q from a point R to a point P is VP – VR , which is the difference in potential energy of charge q between the final and initial points.
2. Potential at a point is the work done per unit charge (by an external agency) in bringing a charge from infinity to that point. Potential at a point is arbitrary to within an additive constant, since it is the potential difference between two points which is physically significant.
3. An equipotential surface is a surface over which potential has a constant value. For a point charge, concentric spheres centered at a location of the charge are equipotential surfaces. The electric field E at a point is perpendicular to the equipotential surface through the point. E is in the direction of the steepest decrease of potential.
4. Potential energy stored in a system of charges is the work done (by an external agency) in assembling the charges at their locations.
5. The potential energy of a charge q in an external potential V(r) is qV(r). The potential energy of a dipole moment p in a uniform electric field E is –p.E.
6. A capacitor is a system of two conductors separated by an insulator. Its capacitance is defined by C = Q/V, where Q and –Q are the charges on the two conductors and V is the potential difference between them. C is determined purely geometrically, by the shapes, sizes and relative positions of the two conductors. The unit of capacitance is farad.
7. If the medium between the plates of a capacitor is filled with an insulating substance (dielectric), the electric field due to the charged plates induces a net dipole moment in the dielectric. This effect, called polarisation, gives rise to a field in the opposite direction. The net electric field inside the dielectric and hence the potential difference between the plates is thus reduced. Consequently, the capacitance C increases from its value C0 when there is no medium (vacuum), C = KC0 where K is the dielectric constant of the insulating substance.
8. A Van de Graaff generator consists of a large spherical conducting shell (a few metre in diameter). By means of a moving belt and suitable brushes, charge is continuously transferred to the shell and potential difference of the order of several million volts is built up, which can be used for accelerating charged particles.

You will learn

✓ Introduction
✓ Electrostatic Potential
✓ Potential Due to Point Charge, Potential Due to an Electric Dipole, Potential Due to System of Charges
✓ Equipotential Surfaces
✓ Potential Energy of System of Charges, Potential Energy of an External Field
✓ Electrostatics of Conductors
✓ Dielectrics and Polarisation
✓ Capacitors and Capacitance
✓ The Parallel Plate Capacitors, Combination of Capacitors Energy Stored in Capacitors
✓ Vann De Graaff Generator

Requirements

• Should know calculus, trigonometry

This course is for

• Complete Physics for Engineering and Medical Entrance Exam Preparation. ( IIT JEE Main | Advanced | BITSAT | SAT | NEET etc.)
• AP Physics | MSAT | MCAT | Course for high school, college
• Courses are suitable for students from over 160 countries from Europe, America, Middle East, Asia, Africa and APAC. Notably England, Germany, France, Sweden, Ireland, Scotland, USA, Canada, UAE, Saudi, Qatar, Kuwait, Malaysia, Indonesia, Myanmar, Newzealand, Australia, South Africa, South Korea, Nigeria, etc

How much does the Physics - Electrostatic Potential and Capacitance course cost? Is it worth it?

The course costs $14.99. And currently there is a 25% discount on the original price of the course, which was $24.99. So you save $10 if you enroll the course now.

Does the Physics - Electrostatic Potential and Capacitance course have a money back guarantee or refund policy?

YES, Physics – Electrostatic Potential and Capacitance has a 30-day money back guarantee. The 30-day refund policy is designed to allow students to study without risk.

Are there any SCHOLARSHIPS for this course?

Currently we could not find a scholarship for the Physics - Electrostatic Potential and Capacitance course, but there is a $10 discount from the original price ($24.99). So the current price is just $14.99.

Who is the instructor? Is studi live a SCAM or a TRUSTED instructor?

studi live has created 115 courses that got 13 reviews which are generally positive. studi live has taught 111 students and received a 4.4 average review out of 13 reviews. Depending on the information available, studi live is a TRUSTED instructor.
Online Learning
Studi Live is an Indian educational venture based in Mumbai. The founders of this portal are into education and technology domains since more than 20 years. Studi Live currently offers online and live lectures for IITJEE and NEET preparation.
The portal will eventually add courses for school students from 5th to 12th, Olympiads, Professional Courses, Commerce and Software Programming for all levels. The Studi Live portal, as the name suggests, offers online live lectures in interactive mode. The site uses highly safe and secure WEBEX platform for online lectures.
Unlike most of the other edtech portals, Studi Live is a collaborative and activity-based platform which strives to conform to the New Education Policy by the Government of India.

9.1

CourseMarks Score®

9.9

Freshness

N/A

Feedback

7.8

Content

Platform: Udemy
Video: 2h 8m
Language: English
Next start: On Demand

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