Which of the following represents ohms law
A. V = RI
B. J = σE
C. I = GV
D. All of the above
Show Answer
Answer: D
Share your understanding of this question with the correct explanation.
The representation of Ohm’s law is given by all of the above options: A. V = RI, B. J = σE, and C. I = GV. Therefore, the correct answer is D: “All of the above.”
Here’s a further explanation:
Ohm’s law relates the voltage (V) across a conductor, the current (I) flowing through it, and the resistance (R) of the conductor. It states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor.
Option A, V = RI, is the most commonly known representation of Ohm’s law. It expresses the relationship between the voltage (V), current (I), and resistance (R) in a circuit. According to this equation, the voltage across a conductor is equal to the product of the current flowing through it and the resistance of the conductor.
Option B, J = σE, represents Ohm’s law in terms of current density (J), electrical conductivity (σ), and electric field (E). It states that the current density in a conductor is directly proportional to the electrical conductivity and the electric field applied to the conductor.
Option C, I = GV, represents Ohm’s law in terms of current (I), conductance (G), and voltage (V). Conductance is the reciprocal of resistance, so this equation states that the current flowing through a conductor is equal to the product of the conductance and the voltage across the conductor.
All of these representations are valid forms of Ohm’s law and describe the relationship between voltage, current, and resistance in a conductor. Therefore, the correct answer is D: “All of the above.”