Inductance (L), capacitance (C) and resistance (R) are constained in a box. When 250 V DC is applied to the terminals of the box, a current of 1.0A floes in the circuit. When an AC source of `250V_(rms)` at `2250 rad sec^(-1)` is connected, a current of `1.25 A_(rms)` flows. It is observed that the current rises with frequency and becomes maximum at `4500 rad sec^(-1)`. find the values of L,C and R. draw the circuit diagram.
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A series circuit consists of a resistance inductance and capacitance.The applied voltage and the current at any instant are given by `E=141.4 cos(5000
Correct Answer - `4 muF,R=141.4/5 Omega` Here phase difference `(0)=360^(0)` & `omega=5000` at Resonance `C=1/(5000)^(2)xx1/(0.01)` `R=V_(0)/I_(0)=141.4/5`
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Calcualte the equivalent resistance between the terminals of the cell (figure) The resistance of each equivalent is `1Omega` and the intersecting diam
Correct Answer - `15/7Omega`
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A cheap voltmeter with an internal resistance of `30Omega` is connected to the terminals of a battery whose internal resistance is `5Omega` and true e
Correct Answer - `1.29 V`
2 Answers 1 views
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Correct Answer - `0.693s`
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An inductor with an inductance of 2.5H and a resistance of `8Omega` is connected to the terminals of a battery with an EMF 6V and negligible internal
Correct Answer - `(a) 2.40 A//s (b) 0.80 A//s (c )0.413 A (d) 0.750 A`
2 Answers 1 views
A series circuit consists of a resistance of `15 Omega`, an inductance of 0.08H and a capacitor of capacitance `30 mu F`. The applied voltage has freq
Correct Answer - `60.65^(@)` lead
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A series circuit consists of a resistance, inductance and capacitance. The apllied voltage and the current at any instant are given as e=141.4 cos (30
Correct Answer - `33.33 mu F`
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Two capacitors of equal capacitance when connected in series hae net capacitance `C_(1)` and when connected in parallel have net capacitance `C_(2)` w
Correct Answer - `C_(1)//C_(2)=1//4`
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In galvanometer of resistance `20Omega` gives a deflection of one division when a potential difference of 4mV is applied across its terminals. Calcula
Correct Answer - `0.01Omega`
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When a resistance of `2 Omega` is placed across the terminals of a battery, the current is 0.5 A. When the resistance across the terminals of the batt
Correct Answer - `1.5 V, 1 Omega`
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