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Which equation is correct according to Ohm's law?

A. [tex]R = V I[/tex]
B. [tex]V = \frac{I}{R}[/tex]
C. [tex]R = \frac{1}{V}[/tex]
D. [tex]V = I R[/tex]

Sagot :

GinnyAnswer
Ohm's law is a fundamental principle in electrical engineering and physics that describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. According to Ohm's law, the correct equation representing this relationship is:

[tex]\[ V = I \cdot R \][/tex]

Let's consider the options given:

1. [tex]\( R = V \cdot I \)[/tex]
- This equation implies that resistance is the product of voltage and current, which is incorrect according to Ohm's law.

2. [tex]\( V = \frac{I}{R} \)[/tex]
- This equation implies that voltage is the quotient of current and resistance, which is incorrect according to Ohm's law.

3. [tex]\( R = \frac{1}{V} \)[/tex]
- This equation implies that resistance is the reciprocal of voltage, which is incorrect according to Ohm's law.

4. [tex]\( V = I \cdot R \)[/tex]
- This equation asserts that voltage is equal to the product of current and resistance, which is exactly what Ohm's law states.

Therefore, the correct equation according to Ohm's law is:

[tex]\[ V = I \cdot R \][/tex]

So, the correct choice is option 4.
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