Recent questions tagged #sub

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Show that average heat produced during a cycle of AC is same as produced by DC with `I =

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

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What is the inductive reactance of a coil if the current through it is 20 mA and voltage across it is 100

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

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The reactance of capacitor is 20 ohm. What does it

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

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What will be its reactance if frequency of AC is

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

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What will be its, reactance when connected in DC circuit? What is its

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

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A capacitor of 50 pF is connected to an a.c. source of frequency 1kHz Calculate its

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

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In given circuit applied voltage `V = 50sqrt2 sin 100pit` volt and ammeter reading is 2A then calculate value of

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

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A 50 W, 100 V lamp is to be connected to an AC mains of 200 V, 50 Hz. What capacitance is essential to be put in series with the lamp

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

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Calculate the impedance of the circuit shown in the

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

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

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

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In given circuit calculate, voltage across

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

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

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

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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

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

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Find out impedance of given

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

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

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

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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 :

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

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