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SyNtHeSiS
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Homework Statement
I want to know that if there is a voltage drop across a resistor, why is it that voltage increases as resistance increases (Ohm's law)?
Homework Equations
None.
The Attempt at a Solution
N/A
SyNtHeSiS said:why is it that voltage increases as resistance increases (Ohm's law)?
But I don't see how an increase in voltage leads to an increase in resistance
vela said:The only hope to obtain a finite answer for the current would be if V=0. That's why in an ideal conductor, the voltage difference between any two points is zero.
vela said:Right. Ohm's law doesn't tell you anything when the resistance is zero other than the voltage has to be zero as well.
Voltage drop refers to the decrease in electric potential that occurs when current flows through a resistor or any other component in a circuit. It is caused by the resistance of the material, which impedes the flow of electrons and leads to a decrease in voltage as the current passes through.
Voltage drop occurs across resistors because they have a property called resistance, which is measured in ohms (Ω). This resistance reduces the flow of current and causes a decrease in voltage as the current passes through the resistor. The higher the resistance, the greater the voltage drop will be.
Voltage drop across a resistor can be calculated using Ohm's Law, which states that voltage (V) is equal to the product of current (I) and resistance (R). So, V = I x R. This means that the voltage drop across a resistor is directly proportional to the current flowing through it and the resistance of the resistor.
Voltage drop cannot be completely eliminated in a circuit, as it is a natural consequence of the flow of current through a resistor. However, it can be minimized by using materials with lower resistance or by using multiple resistors in parallel, which can distribute the current and reduce the overall voltage drop.
Voltage drop can have various effects on a circuit, depending on the amount and location of the drop. It can cause a decrease in the output voltage of a power supply, which can affect the performance of electronic devices. It can also lead to overheating of components and can affect the accuracy of measurements in a circuit.