Questions
An inductor of inductance 1000mH is connected in series with a resistance, a variable capacitance and an AC source of frequency 5 kHz. The value of the capacitance so that maximum current may be drawn into the circuit
detailed solution
Correct option is B
At resonance maximum current will be drawn by the circuit. Then xL=xC i.e fr=12πLC ⇒C=14π2f2L=14×10×(5×103)2×1=1×10−9=1nF .Talk to our academic expert!
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In the series LCR circuit as shown in figure, the heat developed in 80 seconds and amplitude of wattless current is:
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