Questions by varun

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In the adjoining figure the impedance of the circuit will

asked Mar 20, 2022 in 12th Physics

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asked Mar 20, 2022 in 12th Physics

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If `I=2sqrtt` ampere then calculate average and rms values over `t = 2 to 4

asked Mar 20, 2022 in 12th Physics

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Find the time required for 50Hz alternating current to change its value from zero to rms

asked Mar 20, 2022 in 12th Physics

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If `E=20 sin (100pit)` volt then calculate value of E at `t=1/600

asked Mar 20, 2022 in 12th Physics

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A periodic voltage wave form has been shown in fig. Determine. (a) Frequency of the wave form. (b) Average

asked Mar 20, 2022 in 12th Physics

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Explain why A.C. is more dangerous than D.C.

asked Mar 20, 2022 in 12th Physics

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If a direct current of value a ampere is superimposed on an alternating current `I = b sinomegat` flowing through a wire, what is the effective value of the resulting current in the circuit

asked Mar 20, 2022 in 12th Physics

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The Equation of current in AC circuit is `I=4sin[100pi+pi/3] A` . Calculate. (i) RMS Value (ii) Peak Value (iii) Frequency (iv) Initial phase (v) Current at `t =

asked Mar 20, 2022 in 12th Physics

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If `I=I_0sin omegat, E = E_0 cos [omegat+pi/3]`. Calculate phase difference between `E and

asked Mar 20, 2022 in 12th Physics

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If `E=500 sin (100 pit)` volt then calculate time taken to reach from zero to

asked Mar 20, 2022 in 12th Physics

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If Phase Difference between `E and I` is `pi/4 and f = 50 Hz` then calculate time

asked Mar 20, 2022 in 12th Physics

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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

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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

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The reactance of capacitor is 20 ohm. What does it

asked Mar 20, 2022 in 12th Physics

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What will be its reactance if frequency of AC is

asked Mar 20, 2022 in 12th Physics

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

asked Mar 20, 2022 in 12th Physics

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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

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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

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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

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