Recent questions tagged chapter7

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If `X_L = 50Omega and X_C = 40 Omega.` Calculate effective value of current in given

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In given circuit calculate, voltage across

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In given circuit find out (i) impedance of circuit (ii) current in

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When 10V, DC is applied across a coil current through it is `2.5 A,` if `10V, 50 Hz A.C.` is applied current reduces to 2 A. Calculate reactance of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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When an alternating voltage of 220V is applied across a device X, a current of 0.5 A flows through thecircuit and is in phase with the applied voltage. When the same voltage is applied across another deviceY, the same current again flows through the circuit but it leads the applied voltage by `pi'/'2` radians.(a) Name the devices `X and Y.`(b) Calculate the current flowing in the circuit when same voltage is applied across the seriescombination of `X and

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Find out the impedance of given

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Find out impedance of given

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Find out reading of A C ammeter and also calculate the potential difference across, resistance and

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In LCR circuit with an AC source `R = 300Omega, C = 20 muF, L = 1.0 H, E_('rms')=50V and f = 50'/'piHz`. Find RMS current in the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Calculate impedance of the given circuit

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Calculate impedance of the given circuit :

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Calculate impedance of the given circuit :

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For what frequency the voltage across the resistance R will be

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A capacitor, a resistor and a 40 mH inductor are connected in series to an 60Hz AC source of frequency 60Hz, calculate the capacitance of the capacitor, if the current is in phase with the voltage. Also calculate the value of X and

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A coil, a capacitor and an A.C. source of rms voltage 24 V are connected in series, By varying the frequency of the source, a maximum rms current 6 A is observed, If this coil is connected to a bettery of emf 12 V, and internal resistance `4Omega` , then calculate the current through the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Radio receiver recives a message at 300m band, If the available inductance is 1 mH, then calculate required

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In a L–C circuit parallel combination of inductance of 0.01 H and a capacitor of `1muF` is connected to a variable frequency alternating current source as shown in figure. Draw a rough sketch of the current variation as the frequency is changed from 1kHz to

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A voltage of 10 V and frequency `10^3 Hz` is applied to `1/pi muF` capacitor in series with a resistor of `500Omega`. Find the power factor of the circuit and the power

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If `V = 100 sin 100 t volt and I = 100 sin (100 t +pi/3) mA` for an A.C. circuit then find out(a) phase difference between V and I (b) total impedance, reactance, resistance(c) power factor and power dissipated (d) components contains by

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If power factor of a R-L series circuit is `1/2` when applied voltage is `V = 100 sin 100pit` volt and resistance of circuit is `200Omega` then calculate the inductance of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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