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No, resistance is not affected by either voltage or current. Reading the various answers to similar questions on this topic, there seems to be a misunderstanding of Ohm's Law in which people think that, because R = V/I, then a change in either voltage or current must cause a change in resistance. This is most definitely not the case. This is because resistance is the constant of proportionality in the equation. The equation, quoted, merely tells us what the resistance of the circuit happens to be for a given ratio of voltage and current.
Resistance is only affected by the length, cross-sectional area, and resistivity of the conductor. Because resistivity is affected by temperature then, indirectly, temperature also affects resistance. So, if the current flowing through a conductor causes its temperature to change, then so, too, will its resistance -but, it is the temperature that is causing the change in resistance, not the current.
Jayde Bins
Wiki User
∙ 12y agoNo, resistance is not affected by either voltage or current. Reading the various answers to similar questions on this topic, there seems to be a misunderstanding of Ohm's Law in which people think that, because R = V/I, then a change in either voltage or current must cause a change in resistance. This is most definitely not the case. This is because resistance is the constant of proportionality in the equation. The equation, quoted, merely tells us what the resistance of the circuit happens to be for a given ratio of voltage and current.
Resistance is only affected by the length, cross-sectional area, and resistivity of the conductor. Because resistivity is affected by temperature then, indirectly, temperature also affects resistance. So, if the current flowing through a conductor causes its temperature to change, then so, too, will its resistance -but, it is the temperature that is causing the change in resistance, not the current.
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How does the changing the battery voltage affect the current?
If voltage varies then current varies with constant resistance.
How does loading effect affect flow of current?
Ohm's Law says that Voltage = Current x Resistance (Load). Therefore Current = Voltage / Resistance and as resistance decreases current increases and as resistance increases current decreases.
Reducing voltage in a circuit does not affect resistance?
Reducing voltage in a circuit does not directly affect resistance. It affects current. Resistance is an independent variable.Ohm's law: voltage equals current times resistance.However, reducing voltage and/or current does reduce power, which reduces temperature, which can change resistance because resistance is usually affected to some degree by temperature.
How can you determine the resistance of a current?
Voltage = Current x Resistance giving us Current = Voltage / Resistance i.e. Voltage divided by resistance
How are voltage resistance and current related?
Current, voltage and resistance are related by the Ohm's law formula which states that current is directly proportional to the applied voltage and inversely proportional to the resistance at a constant temperature. Stated mathematically: I = E/R where I = current in amperes, abbreviated to A E = voltage in volts, abbreviated to V R = resistance in ohms, usually signified by the Greek omega Ω
How does the changing the battery voltage affect the current?
If voltage varies then current varies with constant resistance.
How does loading effect affect flow of current?
Ohm's Law says that Voltage = Current x Resistance (Load). Therefore Current = Voltage / Resistance and as resistance decreases current increases and as resistance increases current decreases.
Reducing voltage in a circuit does not affect resistance?
Reducing voltage in a circuit does not directly affect resistance. It affects current. Resistance is an independent variable.Ohm's law: voltage equals current times resistance.However, reducing voltage and/or current does reduce power, which reduces temperature, which can change resistance because resistance is usually affected to some degree by temperature.
What is a relationship among voltage current and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
What is the relationship among voltage current and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
What is the relationship among voltage circuit and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
How can you determine the resistance of a current?
Voltage = Current x Resistance giving us Current = Voltage / Resistance i.e. Voltage divided by resistance
How can electric current be changed in Omh's Law?
Ohm's Law: V = IR Solving for current: I = V/R To affect the current, you can either change the voltage (more voltage --> more current), or the resistance (more resistance --> less current).
What does power divided by speed equal?
Ohm so correctly said: Voltage divided by current equals resistance. Voltage divided by current will tell you the value of a circuit's resistance. But resistance is not affected by either voltage or current. It is determined by the length, cross-sectional area, and resistivity (type of conducting material) of the conductor. Resistivity is, in turn, affected by temperature. So voltage divided by current tells you what the resistance happens to be - changes in voltage or current do not affect resistance.
How does the voltage applied to a circuit affect the current flowing through the wire?
Voltage is equal to the Current multiplied by the Resistance.Without changing the resistance, increasing the applied voltage in a circuit will increase current flow. There is a simple, direct relationship between voltage and current. Double the voltage, twice the current will flow. Triple the voltage, and the current will triple. As voltage (E) equals current (I) times resistance (R), when resistance is fixed, what happens to voltage will happen to current.
Voltage muiltiplied by resistance measures to current?
No. Voltage divided by resistance is equal to current.
How do you compute for voltage if current and resistance is given?
Voltage = Current * Resistance (Ohm's law)
