If the peak value of alternating current is 7√2A then the mean square value of current will be?
Correct answer: A. 7A
- A. 7A
- B. 49A
- C. 7√2A
- D. 254A
Explanation
The mean square value (or RMS value) of an alternating current (AC) is given by the peak value divided by the square root of 2.Given that the peak value of the AC is 7√2 Irms = Ipeak/√2 =7√2/√2 =7 ASo, the mean square (RMS) value of the current is 7 A.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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