Multiple Choice
According to Ohm's Law, what is the relationship between the current and the voltage across a resistor in a circuit?
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27. Resistors & DC Circuits
Resistors and Ohm's Law
Multiple Choice
Which of the following equations represents Ohm's Law?
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Verified step by step guidance1
Recall that Ohm's Law relates the voltage (V), current (I), and resistance (R) in an electrical circuit.
The fundamental form of Ohm's Law is given by the equation \(V = I \times R\), which states that voltage is the product of current and resistance.
Examine the given equations and identify which one matches the form \(V = I \times R\).
The first equation \(P = I R^{2}\) involves power (P) and resistance squared, which is not Ohm's Law.
The second and third equations relate resistance and current to power and voltage in ways that do not match Ohm's Law, confirming that \(V = I R\) is the correct representation.
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