Correct Answer - Option 1 : decrease
In a simple DC circuit with a constant voltage, with the resistance increases, the current will decrease.
Explanation:
Ohm’s law states that at a constant temperature, the current through a conductor between two points is directly proportional to the voltage across the two points.
Voltage = Current × Resistance
V = I × R
\(I \ \propto \ \dfrac{1}{R}\)
∴ If the resistance increases, the current decreases.
Limitations of ohms law:
1) Ohm’s law is not applicable to unilateral networks. Unilateral networks allow the current to flow in one direction. Such types of networks consist of elements like a diode, transistor, etc.
2) Ohm’s law is also not applicable to non – linear elements. Non-linear elements are those which do not have current exactly proportional to the applied voltage that means the resistance value of those elements’ changes for different values of voltage and current. An example of a non-linear element is a thyristor.
3) Ohm’s law is also not applicable to vacuum tubes.
