Multiple Choice
In the context of resistors and Ohm's law, what component is commonly used to control (limit) electric current in a circuit?
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27. Resistors & DC Circuits
Resistors and Ohm's Law
Multiple Choice
In the context of resistors, which equation correctly represents Ohm's law relating voltage, current, and resistance?
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Verified step by step guidance1
Recall that Ohm's law is a fundamental relationship in electrical circuits that relates voltage (V), current (I), and resistance (R).
Ohm's law states that the voltage across a resistor is directly proportional to the current flowing through it, with resistance as the constant of proportionality.
Mathematically, this relationship is expressed as \(V = I \times R\), where \(V\) is voltage, \(I\) is current, and \(R\) is resistance.
Check the given options and identify which one matches the correct formula \(V = I \times R\).
Confirm that the other options do not correctly represent Ohm's law because they either invert the relationship or multiply variables incorrectly.
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