Ohm S Law

To solve the problem, we need to identify the equation that represents Ohm's law.

1. Understanding Ohm's Law:
Ohm's law states that the voltage across a resistor is directly proportional to the current flowing through it, provided the temperature remains constant. The relationship is given by:
where is the voltage, is the current, and is the resistance.

2. Analyzing the Given Options:
- Option (1): — This represents the correct relationship according to Ohm's law, as voltage is proportional to current at constant resistance.
Option (2): — This is incorrect, as it suggests an inverse relationship, which is not how voltage and current behave in Ohm's law.
Option (3): — This is not correct unless the resistance , but it does not fully represent Ohm's law.
Option (4): — This represents the power formula, not Ohm's law.

Final Answer:
The correct relation that represents Ohm's law is (1) .

To solve the problem, we need to find the correct relationship between potential difference and current according to Ohm's Law.

1. Understanding Ohm's Law:
Ohm's Law states that the potential difference across a conductor is directly proportional to the current flowing through it, provided the temperature and other physical conditions remain constant.

Mathematically, it is expressed as:

2. Expressing the Proportionality:
From the equation , we can write:

This shows a direct proportional relationship between voltage and current.

3. Elimination of Other Options:
- is incorrect (inverse relation, not valid)
- is used in power calculation (not Ohm's law)
- is also incorrect

Final Answer:
According to Ohm's Law,