# Physics Class 10 Electricity Notes

## Physics Class 10 Electricity Notes

Contents

As we know electricity plays a very important role in our day-to-day life. In this chapter of class 10 Electricity, we will study electricity, the heating effects of electricity, and some important related terms like electric potential, electric work, commercial units of electricity, etc. We will provide you with the best Physics Class 10 Electricity Notes that will surely help you fetch good marks in your upcoming CBSE Board Exam and of course in other exams too.

Let us first discuss the topics that we will study in Physics Class 10 Electricity. Here is the list of topics we will study in Class 10 Magnetic Effects of Electric Current Notes-

Class 10 Chapter 10 Light Reflection of Light Notes

• Introduction
• Electric Charge and Electric Current
• Electric Circuit and symbol of its components
• Electric Potential and Potential Difference or Voltage
• Electric devices like Ammeter and Voltmeter
• Ohm’s Law and its verification
• Resistance
• Factors affecting Resistance
• Resistivity or Specific Resistance
• Parallel and Series Connection of Resistors
• Heating Effect of Electric Current
• Some Applications of Heating Effect of Electric Current
• Electric Work and Electric Power
• Commercial Unit of Electric Power
• Basic Numericals

### Introduction

We know how important is electricity in today’s modern world. Imagine the world around us without electricity- it would be quite different! In this Physics Class 10 Electricity Notes, we will explore how it is generated, how it flows through wires, and how it lights up our lives.

William Gilbert was the first scientist who coined the term ‘Electricity’ in the 16th century while studying different phenomena associated with electrically charged objects.

### Electric Charge and Electric Current

Let us look at the definition of electric charge and electric current.

#### Define Electric Charge

It is a fundamental property of a matter. It is this property due to which matter experiences and produces electrical and magnetic effects.

• It can exist in two forms- positive (proton) and negative (electron).
• Like charges repel each other and unlike charges attract each other.
• The SI Unit of electric charge is coulomb (C).
• 1 electron consists of -1.6× 10-19 C.

#### Electric Current

to be updated soon

### Basic Numericals

Question: If a current of 0.1 A is drawn by a filament of an electric bulb for 20 minutes. Find the amount of electric charge that flows through the circuit.

Answer: Given, I = 0.1 A; t = 20 min = 20×60 s = 1200 s
As we know that I= Q/t ⇒ Q = I×t
So, Q = 0.1 A × 1200 s
= 120 C [Ans]

Question: How much work is done in moving a charge of 12 C across two points having a potential difference of 220 V?

Answer: We know Work = V×Q = 220×12 = 2640 J