Multiple Choice
In the context of resistors and Ohm's law, which SI unit is used to measure electrical resistance?
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27. Resistors & DC Circuits
Resistors and Ohm's Law
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In the context of resistors and Ohm's law, which quantities are related by the equation ?
A
Voltage, current, and resistance
B
Electric field, magnetic field, and charge
C
Power, time, and energy
D
Capacitance, voltage, and frequency
Verified step by step guidance1
Identify the equation given: \(V = IR\), which is known as Ohm's law.
Understand the quantities involved: \(V\) represents voltage (potential difference), \(I\) represents current, and \(R\) represents resistance.
Recall that 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.
Recognize that the other options involve different physical quantities that are not related by this equation, such as electric and magnetic fields, power and energy, or capacitance and frequency.
Conclude that the equation \(V = IR\) relates voltage, current, and resistance.
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