- #1
zakki said:getting a small doubt with the resistors,
which are parallel and in series?
can you tell me the total voltage please?
Resistance value is a measure of the opposition to the flow of electric current through a material. It is measured in ohms (Ω) and can be calculated using Ohm's law, which states that resistance is equal to voltage divided by current.
The resistance value of a material is affected by its length, cross-sectional area, and temperature. Longer materials have higher resistance, while wider materials have lower resistance. Temperature also affects resistance, with most materials having higher resistance at higher temperatures.
Resistance impacts electrical circuits by limiting the flow of current, which can affect the overall performance and functioning of the circuit. High resistance can lead to voltage drops and reduced efficiency, while low resistance can cause overheating and potential damage to the circuit.
Materials with high resistance include wood, rubber, and plastic, while materials with low resistance include metals such as copper, gold, and silver. Graphite and carbon are also known for their low resistance, which is why they are used in electronic components like resistors.
Resistance can be reduced in a circuit by using conductive materials with lower resistance, increasing the diameter of wires to decrease their resistance, or by reducing the length of the circuit. Additionally, using components like resistors and capacitors can also help to regulate and reduce resistance in a circuit.