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NEET UG 2026 » NEET UG Study Material » Physics » Circuit Diagram
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Circuit Diagram

in this article we will discuss circuit diagram, 741 op amp circuit diagram, circuit diagram meaning, circuit, types of circuit, components of circuit diagram and more.

Table of Content
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A circuit diagram (also known as a wiring diagram, electrical diagram, elementary diagram, or electronic design) is a diagram that shows how an electrical circuit works. A graphical circuit diagram employs basic depictions of parts, whereas a schematic diagram uses specified symbolic representations to show the circuit’s components and relationships.

Circuit

A circuit is basically a closed loop in which charges can circulate indefinitely. In a bulb connected with a battery, charges travel not only through the light bulb filament but also through the cables connecting the battery pack and the light bulb.

Types of circuit

A closed circuit is comparable to a road that needs a bridge to cross a river. A bridge enables your vehicle to travel along a road, across a canal, and back to the other side. Electrical energy (electrons) can circulate and travel in a closed circuit. In a closed circuit, there are no delays that can stop the supply of electricity. The closed circuit is  a circuit which is complete and allows the current to flow.

Open circuit

An opened circuit is the circuit in which current cannot flow because the path has been broken or opened at some point. An open circuit is often referred to as a broken circuit.

Short circuit

A short circuit is an electrical circuit that permits current to flow unintentionally through a path without or very low electrical impedance. As an outcome, the circuit generates an excessive amount of current. An open circuit, that is an infinite resistance across the two nodes, is the total opposite of a short circuit.

Parallel circuit

A parallel circuit has branches that separate the current so that only a portion of it passes through each branch. In a parallel circuit, the voltage, or potential difference, between each branch is the same, however the currents may differ.

Series circuit

A simple circuit that permits electrons to travel between one or more resistors is known as a series circuit. A resistor is something that absorbs electricity from a cell (battery). The resistor in a series circuit is commonly a bulb. The circuit is connected to the cell through one end and another to  light the bulb, without  branches. All circuit components should be linked to the cell from one end and the bulb from the other; unwanted gaps or interruptions may cause the circuit to failure.

Circuit diagram

A circuit can be characterised as a path that the electric current uses to travel. As a result, a circuit diagram can be considered as a visual representation of an electrical circuit.

The wires are indicated by the lines that indicate the electrical circuits. Other symbols are used to represent electronic and electrical components. It benefits electricians in their field operations because they rely on an electric circuit diagram to start any wiring-related work.

Example of a Circuit Diagram

Three cells are arranged in a battery pack to power a circuit with three light bulbs in the circuit diagram below.

https://images.static-collegedunia.com/public/image/10643ba4e4fbed6ff01267311311a00f.png?tr=w-368,h-126,c-force

Drawing three lightbulbs and three cells connected by wires can simply convey the spoken description of the circuit provided above. The light bulbs are linked to each other in series in the circuit diagram above. It is not necessarily required, however, to connect them in a sequential order.

Components of a Circuit Diagram

Electric Cell

An electric cell is the first and most important component. It acts as a current source. The larger terminal is considered to be positive, while the smaller one is said to be negative in its symbolic portrayal.

https://images.static-collegedunia.com/public/image/82447b9141b60a4dd3914f4dd723ea8f.png?tr=w-450,h-375,c-force

Battery

A battery, that is made up of many cells, is another important component. It has functions that are similar to those of a cell, and its schematic representation may be studied in the same way as a single cell can.

https://images.static-collegedunia.com/public/image/b08f998c981b4e70cf8f3152720a4327.png?tr=w-313,h-200,c-force

Wire joint

One device must be linked to another device in a few circuit designs or in an electrical circuit, and it is done using wires. And this is depicted by drawing blobs at the points where they connect.

https://images.static-collegedunia.com/public/image/9aebe53f6e5c2d70b3b1c6fe6f6217e0.png?tr=w-400,h-74,c-force

Electric bulb

This is a luminescent electrical device that also serves as a quality assurance tool for a whole circuit diagram.

https://images.static-collegedunia.com/public/image/530005fe467d48197b4454b6748e1551.png?tr=w-204,h-111,c-force

Resistor

Its sole purpose is to limit the amount of current that flows across the entire electrical circuit.

https://images.static-collegedunia.com/public/image/ae9665aa2842c1301dad4f142fd19d11.png?tr=w-400,h-150,c-force

741 op amp circuit diagram

The Operational Amplifier is the most versatile Integrated Circuit on the market. It is really affordable, especially considering the fact that it includes hundreds of components. The 741 is the most common Op-Amp, and it’s featured in a lot of circuits.

The OP AMP is a ‘Linear Amplifier’ with a wide range of applications. Its principal purpose, similar to a Dirac Pair, is to amplify (boost) a weak signal.

INVERTING (-) and NON-INVERTING (+) inputs, as well as one output at pin 6, make up the OP-AMP.

Operational Amplifiers Summary

Conclusion

A circuit is basically a closed loop in which charges can circulate indefinitely.In a bulb connected with battery, charges are travelling not only through the light bulb filament but also through the cables connecting the battery pack and the light bulb.

A circuit can be characterised as a road that the electric current uses to travel. As a result, a circuit diagram can be considered as a visual representation of an electrical circuit.

The wires are indicated by the lines that indicate the electrical circuits. Other symbols are used to represent electronic and electrical components. It benefits electricians in their field operations because they rely on an electric circuit diagram to start any wiring-related work.

 
faq

Frequently Asked Questions

Get answers to the most common queries related to the NEET UG Examination Preparation.

What is circuit?

Ans. A circuit is a closed loop through which electrons can pass. Electrical energy is provided in the circuit by a ...Read full

What is current?

Ans. A flow of electrical charge generally occurs between the electrons or electron-deficient atoms, is referred to...Read full

What is 741 op amp?

Ans. The operational amplifier, often referred to as an op amp, is an electrical device that acts as a voltage-contr...Read full

Ans. A circuit is a closed loop through which electrons can pass. Electrical energy is provided in the circuit by a source of electricity, such as a battery.

Ans. A flow of electrical charge generally occurs between the electrons or electron-deficient atoms, is referred to as current. It is denoted by typical sign ‘I’ for current.

Ans. The operational amplifier, often referred to as an op amp, is an electrical device that acts as a voltage-controlled voltage source. An operational amplifier (op amp) is a complicated electronic device made up of resistors, capacitors, transistors, and diodes. It’s available on the market as an integrated circuit.

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