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For high frequency, a capacitor

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The coil of a choke in a

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The power factor of an ac circuit having resistance (R) and inductance (L) connected in series and an angular velocity w

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An inductor of inductance L and resistor of resistance R are joined in series and connected by a source of frequency ω power dissipated in the circuit

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In a LCR circuit capacitance is changed from C to 2C. For the resonant fequency to remain unchanged, the inductance should be change from L

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In an LCR series ac circuit the voltage across each of the components L, C and R is 50 V. The voltage across the LC combination will

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An inductor L and capacitor C are connected in the circuit as shown in fig. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero

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In a circuit L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by `45^0` . The value of c

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In a series resonant LCR circuit, the voltage across R is 100 V and `R= 1kOmega` with `C =2muF`. The resonant frequency `omega` is 200 rad/s.At resonance the voltage across L

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A coil of inductive reactance `31Omega` has a resistance of `8Omega` . It is placed in series with a condenser of copacitive reactance `25Omega` . The combination is connected to an a.c. source of 110 volt. The power factor of the circuit

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The diagram shows a capacitor C and resistor R connected in series to an ac source. V1 and V2 are voltmeters and Ais an ammeter, consider the following statements. (1) Readings in A and V2 are always in phase. (2) Reading in V1 is ahead in phase with reading in V2 . (3) Reading in A and V1 are always in phase. Which of these statements are / is

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The reading of ammeter in the circuit shown will

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In the adjoining circuit the voltmeter whose reading will be zero at resonance

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In the adjoining figure the impedance of the circuit will

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Is it

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The dimensions of magnetic flux

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A circular disc of radius `0.2 m` is placed in a uniform magnetic field of induction `(1'/'pi) Wbm^(-2)` in such a way that its axis makes an angle of 60° with B. The magnetic flux linked with the disc

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According to Faraday’s law of electromagnetic induction, the magnitude of the induced emf in a circuit is equal to the time rate of change

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The flux linked with a circuit is given by `phiB = t^2 +2`. The graph between time (X-axis) and induced emf (Y-axis) will be

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A square loop of wire, side length `10 cm` is placed at angle of 45° with a magnetic field that changes uniformly from 0.1 T to zero in `0.7s`. The induced current in the loop (its resistance is 111)

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