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DC circuits
Published in Charlie Cullen, Learn Audio Electronics with Arduino, 2020
Ohm’s Law is a simple equation to work with and forms the basis of all electrical circuit analysis. We can apply the equation in different ways, where we can use any two of the quantities involved to determine the third by simply rearranging the terms: Voltage,V=IRCurrent,I=VRResistance,R=VI
Basic Circuit Analysis
Published in Kevin Robinson, Practical Audio Electronics, 2020
Ohm’s law states a very simple relationship between voltage, current, and resistance. It can be used to calculate the behaviour of very many circuits and is probably the single most useful calculation to know when it comes to working out what is going on in pretty much any electrical system. Some care needs to be taken when applying it to circuits which involve components other than simple resistances. This is addressed in more detail as these components are encountered along the way. The basic relationship represented by Ohm’s law, as shown in Eq. 9.1, forms the bedrock of a solid understanding of electricity and electronics.
The Measurement Pipeline
Published in Afshin Samani, An Introduction to Signal Processing for Non-Engineers, 2019
I assume most readers of this book are familiar with the term of resistance in electrical circuits from high school physics. Resistance refers to opposition against the electrical current in an electrical circuit. Again from high school physics, one could remember the relationship between resistance, current and voltage, known as “Ohm’s law”, is voltage across a resistor (V) equals the multiplication of the electrical current passing through it (I) and its resistance (V = R.I).
Electrical behavior investigation of sewn textile transmission paths on weft-knitted fabrics used for muscle activity monitoring
Published in The Journal of The Textile Institute, 2022
Abdel Salam Malek, Ashraf Elnahrawy, Doaa Wagdy
In order to transmit and monitor signals in smart electronic textiles, conductivity and resistivity are the most significant electrical properties in characterizing conductive textile materials for smart garment applications. Hence, the electrical conductivity of conductive threads varies according to the final end-use. However, for bio-textile applications, the electrical resistance should be minimal to maintain the goals of being wearable and contribute significantly to diseases diagnoses and detection. The electrical resistance is a measure that prevents the passage of electrical current in the circuit. The measurement unit of resistance is ohm (Ω) and can be calculated according to the ohm law when dividing the applied voltage by the current (AATCC Test Method 84, 2018). Accordingly, the surface electrical resistance of electronic textiles can be measured. This electrical test is commonly used in determining the electrical properties of materials as textile threads and electric wires because it is suitable for measurement and easy to conclude. The value of the resistance is calculated from the relationship: