10th CBSE Electricity important points CBSE, ICSE , All State Boards

10th CBSE Electricity important concept

Are you preparing for the Class 10 CBSE Science board exam? Here's a complete and concise summary of the Electricity chapter. These important notes and formulas will help you revise faster and score better in exams.

.🔌 Chapter: Electricity – Overview

The chapter “Electricity” in CBSE Class 10 explains electric current, Ohm’s law, resistance, and power. Understanding formulas and their applications is the key to solving numerical questions in exams.

ALL DEFINITIONS:

Current:- the amount of charge flowing through a particular area in unit time

One ampere:- One ampere is constituted by the flow of one coulomb of charge per second.

Potential difference:- The electric potential difference between two points in an electric circuit carrying some current is the work done to move a unit charge from one point to the other.

One volt:- One volt is the potential difference between two points in a current carrying conductor

when 1 joule of work is done to move a charge of 1 coulomb from one point to the other.

Ohm’s law:- The potential difference, V, across the ends of a given metallic wire in an electric circuit is directly proportional to the current flowing through it, provided its temperature remains the same. This is called Ohm’s law.

10th CBSE Electricity important notes and formulas

One Ohm:- If the potential difference across the two ends of a conductor is 1 V and the current through it is 1 A, then the resistance R, of the conductor is 1 Ohm.

Variable resistance:- A component used to regulate current without changing the voltage source is called variable resistance.

Heating effect of electric current:- If the electric circuit is purely resistive, that is, a configuration of resistors only connected to a battery; the source energy continually gets dissipated entirely in the form of heat. This is known as the heating effect of electric current.

Joule’s law of heating:- The law implies that heat produced in a resistor is directly proportional to

(i) the square of current for a given resistance,

(ii) resistance for a given current, and

(iii) the time for which the current flows through the resistor.

Why do These Notes Help You?

Perfect for last-minute revision
Covers all formulas and key concepts
Useful for both school exams and competitive exams

Electric power:- The rate at which electric energy is dissipated or consumed in an electric circuit is called electric power.

One Watt:- It is the power consumed by a device that carries 1 A of current when operated at a potential difference of 1 V.