in the following circuit diagram if the frequency of the source is double then the value of current flowing in R will become
Correct answer: A. double
- A. double
- B. half
- C. √2 A
- D. four times
Explanation
As the frequency increases, the impedance of the resistor (which is effectively its resistance in the context of AC circuits) remains constant, so the current will increase proportionally if the voltage amplitude is held constant
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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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