Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain constant.
V = IR
V = Voltage across the conductor
I = Current flowing through the conductor
R = Resistance provided by the conductor to the flow of current.
Applications of ohms law used in daily life
- By shifting the regulator to and fro, we can regulate the speed of the fans in our houses. By controlling the resistance via the regulator, the current flowing through the fan is managed here. We can measure the resistance, current and thus power flowing via Ohm’s Law for any particular value of the input.
- The electrical heaters have a high-resistance metal coil that allows a certain amount of current to pass across them to provide the heat needed. Using this law, the power to be given to the heaters is determined.
- There are a lot of resistors inside the electric kettle and irons. In order to provide the necessary amount of heat, the resistors restrict the amount of current that can flow through them. By using Ohm’s law, the size of resistors included in them is defined.