Why would the temperature need to remain constant? Resistance will vary with temperature but that doesn't invalidate Ohm's Law, it just means that for a fixed voltage, the current will fluctuate inversely with the resistance fluctuationLim Y K said:according to ohm's law, the current is proportional to the potential difference provided that the temperature remains constant. so , the for equation , R= V/I, may i know which is the constant in the equation? i know the general form of direct proportion is y=kx or y/x=k but in R=V/I, i am unable to identify which is the constant. please help me with this. thank you
OR, the current induced is directly proportional to the voltage applied.Qwertywerty said:Ohm's law states that for constant physical conditions , the potential difference applied across a circuit is directly proportional to the current induced .
Qwertywerty said:Ohm's law states that for constant physical conditions , the potential difference applied across a circuit is directly proportional to the current induced .
Or , V ∝i , and V=iR .
Thus the constant of proportionality , by ohm's law , is R .
I hope this helps .
Ohm's Law is a fundamental equation in physics that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor is directly proportional to the voltage across the conductor and inversely proportional to the resistance of the conductor.
R=V/I is the mathematical representation of Ohm's Law, where R represents the resistance of the conductor in ohms, V represents the voltage applied to the conductor in volts, and I represents the current flowing through the conductor in amperes.
To identify the constant in R=V/I, you can rearrange the equation to solve for the resistance (R). This will result in the equation R=V/I. The constant in this equation is the resistance, which remains constant as the voltage and current change.
Ohm's Law is important because it helps us understand and predict the behavior of electrical circuits. It allows us to calculate the voltage, current, and resistance in a circuit and determine how changes in one of these quantities will affect the others.
Ohm's Law can be applied to most electrical circuits, but there are some exceptions. It is most accurate for conductors that have a constant resistance, such as resistors. In circuits with non-ohmic components, such as diodes or transistors, Ohm's Law may not apply.