# MPBSE - 8 - Science :: Electricity and circuits

Go To: MPBSE-Science-Grade 8

## Contents

# Stream of science - Physical science

## Concept - Electric circuit

# Brief introduction of the concept

Electric circuits are paths through which electricity flows. They consist of three main components: a power source, a conductor, and a load. The power source provides the energy that flows through the circuit, and it can be a battery, a generator, or an electrical outlet. The conductor is the material that allows electricity to flow through it, and it can be a wire made of copper or aluminum. The load is the component that uses the electricity to perform a task, such as a light bulb or a motor.

Electric circuits can be either open or closed. An open circuit is a circuit that is not complete, meaning that the electricity cannot flow through it. A closed circuit, on the other hand, is a complete circuit, which allows electricity to flow freely.The flow of electricity in a circuit is measured in amperes (amps), and the strength of the electricity is measured in volts.

Electric circuits can be classified into two types: series circuits and parallel circuits. In a series circuit, the components are connected in a single path, so that the current flows through each component in turn. In a parallel circuit, the components are connected in multiple paths, so that the current can flow through each component independently.

Electric circuits are governed by Ohm's law, which states that the current flowing through a component is directly proportional to the voltage applied across it, and inversely proportional to its resistance. This relationship is represented by the equation I = V/R, where I is the current, V is the voltage, and R is the resistance.

Electric circuits are an important part of our daily lives, as they are used in many devices we use regularly, such as lights, appliances, and electronics. Understanding how electric circuits work is important for understanding how these devices work and for safely using and maintaining them.

# Importance of the concept

Electric circuits are the foundation of all electronic devices. By learning about electric circuits, students can gain an understanding of how electronic devices work and how they can be designed and built.

Students will learn about the various types of electric circuits and how they are used in everyday life, such as in electronic devices, lighting, and heating.

Understanding electric circuits is essential for safety reasons. Students need to know about the risks associated with electricity and how to handle it safely. They should also be taught how to use circuit breakers and fuses to protect themselves from electrical hazards.

Electric circuits require critical thinking skills to analyze and solve problems related to circuit design, component selection, and troubleshooting.

Knowledge of electric circuits is a fundamental requirement for many careers in the engineering and technology fields. By learning about electric circuits at an early age, students can start building a foundation for their future career prospects.

An understanding of electric circuits can help students to come up with innovative ideas for new technologies. With a solid foundation in electric circuits, students can think creatively about how to improve existing technologies or create new ones.

Electric circuits are a part of our daily lives, from the light switches we use to turn on our lights, to the power outlets we use to charge our phones. By understanding how electric circuits work, students can gain a better appreciation for the technology that surrounds them and how it impacts their lives.