Ohm's law states that the current through a conductor is directly proportional to the voltage applied, with the constant of proportionality being the resistance of the conductor. Mathematically, this is expressed as I = V/R, where I is current, V is voltage, and R is resistance. Resistance is defined as the opposition to current flow and is measured in Ohms. Ohm's law has many applications in circuit design, electrical safety analysis, AC circuit analysis, and electrical heating devices.

1. Applied Physics
Presented To : Mam Madiha Masood Makhdoom
Presented By :
Muhammad Farooq(014)

2. OHM’S LAW
And ItsApplications
Given By :
This Law was given by German
Physics Georg Simon Ohm

3. Ohm’s Law Statement
The current flowing through a conductor is directly proportional to potential
difference across the ends provided the physical state (such as temperature) remains
constant.
Mathematical Form :
The ohm’s law can be expressed as
I V
𝟏
I = V
𝑹
V=IR
Where R is the constant of proportionally and is called Resistance of Conductor.

4. Resistance And its Unit
The opposition offered to the flow of charge through a conductor is called
resistance.
Unit :
The S
Iunit of resistance isOhm.it can be expressed as
R= 𝑉
𝐼
1ohm=
𝟏 𝒗𝒐𝒍𝒕
𝟏 𝒂𝒎𝒑𝒆𝒓𝒆
Ohm :
Resistanceis said to be one ohm when one ampere currentpasses through the
conductor due to the potential differenceof 1volt across its ends.

5. Applications of Ohm’s Law
Ohm’s law has many practical applications in electrical and
electronics engineering including :
▶ Circuit Design and analysis
Ohm's law is used to calculate the required resistance, current, or
voltage for a given circuit.

6. Electrical Safety
Ohm's law is used to determine safe operating limits for electrical
equipment and to design circuits that meet safety standards.

7. AC Circuit Analysis
Ohm's law is also applied to AC circuits with the concept
of impedance, which is theAC equivalent of resistance.

8. Electrical Heating
Ohm's law is used in electric heating devices such as toasters,
electric stoves, and irons to determine the current, voltage, and
resistance required to heat the element.

9. Conclusion :
▶Overall, Ohm's law is a fundamental concept in
electrical engineering and has numerous practical
applications in various fields.