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At constant temperature, Georg Ohm discovered that the electrical current flowing through a given linear resistance is proportional to the voltage placed across it and inversely proportional to the resistance. Ohms Law is based on the relationship between voltage, current, and resistance.

The link between electric current and a potential difference is described by Ohm’s law. In most conductors, the current is exactly proportional to the voltage applied to them. Georg Simon Ohm, a German scientist, was the first to verify Ohm’s law by experiment. In this article, we will discuss Ohm’s law in detail, the students must bookmark this page to get all the updates.

## Ohms Law Statement

Ohm’s Law is a fundamental principle in electrical engineering and physics that relates the voltage (V), current (I), and resistance (R) in an electrical circuit. It is typically stated as:

V = I * R

Where:

- V represents the voltage across a component or the entire circuit (measured in volts, V).
- I represent the current flowing through the component or the entire circuit (measured in amperes or amps, A).
- R represents the resistance of the component or the total resistance in the circuit (measured in ohms, Ω).

In simple terms, Ohm Law states that the voltage across a component is directly proportional to the current flowing through it, and this relationship is inversely proportional to the resistance of the component or the circuit. This law is named after Georg Simon Ohm, a German physicist who formulated it in the 1820s.

Ohm Law is based on the relationship between voltage (V), current (I), and resistance (R). The link between electric current and a potential difference is described by this law.

## Ohm’s Law Formula

Below we have given the formula of Ohm’s law by using the formula given below students can calculate the value of Voltage, Resistance, and Current.

V = IR |

This shows voltage is directly proportional to current.

V = Voltage or potential difference of conductor

I = current flowing through the conductor

R = Resistance

I = V/R |

We can find current by the above formula if voltage and resistance are given.

R = V/I |

We can find the resistance using the above formula if we know voltage and current.

## Ohm’s Law Derivation

**I =V/R**

## Ohm’s Law Experiment

**Equipment needed:**Resistor, Ammeter, Voltmeter, Battery. Plug Key, Rheostat

**Process**

## Ohm’s Law Diagram

the formula of ohm’s law by using the procedure given below students can calculate the value of Voltage, Resistance, and Current.

V = IR |

## Ohm’s Law in Vector Form

**Ohm’s law in vector form is J=σE**

This is ohm’s law in vector form

where J = current density

E = potential gradient

σ = conductivity

## Concept of Resistance from Ohm’s Law

**Unit of Resistance**

**ohm ( Ω )**

## Definition of Power from Ohm’s Law

**watt.**

## Ohm’s Law: Pie Chart

## Ohm’s Law: Relationship Between Current, Voltage, and Resistance

Here we will check the resistance on different voltages and currents, have a look at the table given below.

Voltage(V) | Current(I) | Resistance(R) R = V/I |

0.5 | 1 | 0.5 |

1 | 2 | 0.5 |

2 | 2 | 1 |

3 | 1 | 3 |

4 | 2 | 2 |

6 | 2 | 3 |

8 | 2 | 4 |

10 | 2 | 5 |

12 | 3 | 4 |

14 | 7 | 2 |

16 | 4 | 4 |

18 | 9 | 2 |

20 | 10 | 2 |

15 | 7 | 2.5 |

14 | 2 | 7 |

22 | 11 | 2 |

13 | 2 | 6.5 |

11 | 2 | 5.5 |

19 | 2 | 9.5 |

## Ohm’s Law for a Magnetic Circuit

Ohms law for magnetic circuits is F=ϕS.

Explanation: Ohm’s law for magnetic circuits states that the MMF is directly proportional to the magnetic flux whereas reluctance is the constant of proportionality.

## Ohms Law is Applicable to

Ohm’s law is true for all **metallic conductors at low temperatures**. “In metallic conductors at constant temperature and zero magnetic fields, the current flowing is proportional to the voltage across the ends of the conductor, and is inversely proportional to the conductor’s resistance,” according to Ohms Law.

## Ohm’s Law Limitations

•Electrical components that only allow one direction of current flow, such as diodes and transistors, are not subject to Ohms law.

•Ohm’s law does not apply to electronic valves (diode valves, triodes), semiconductors (germanium, silicon, etc.), electrolytic materials, and gasses under low pressure i.e. non-ohmic conductors