Which of the following parameters in series LCR circuit is analogous to driving force F(t) in mechanics?
Correct answer: A. Voltage V
- A. Voltage V
- B. Inductance L
- C. Capacitance C
- D. V2/L
Explanation
In a series LCR circuit, the voltage V is analogous to the driving force F(t) in mechanics. Just as a force is needed to set a mass into motion in a mechanical system, voltage is needed to drive current through a circuit. The other options are components or expressions related to energy storage or resistance to change in the circuit but do not serve as the driving force.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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