Alternating Cur...

Figure shows a series LCR circuit connected to a variable frequency 230 V source.
The source frequency which drives the circuit in resonance is

A voltage of peak value 283 V and varying frequency is applied to series LCR combination in which R = 3$$\Omega$$, L = 25 mH and C = 400$$\mu$$F. Then the frequency (in Hz) of the source at which maximum power is dissipated in the above is

A transmitter transmits at a wave length of 300 meters. A capacitor of a capacitance 9.6 $$\mu$$ F is being used. The value of the inductance for the resonant circuit is approximately

A source of constant voltage $$V$$ is connected to a resistance $$R$$ and two ideal inductors $$L_{1}$$ and $$L_{2}$$ through a switch $$S$$ as shown. There is no mutual inductance between the two inductors. The switch $$S$$ is initially open. At $$t=0$$, the switch is closed and current beings to flow. Which of the following options is/are correct?

If R is resistance, L is inductance, C is capacitance, H is latent heat, and s is specific heat, then match the quantity given in Column I with the dimensions given in Column II.

After the capacitor gets fully charged, $$S_{1}$$ is opened and $$S_{2}$$ is closed so that the inductor is connected in series with the capacitor. Then,

Two inductors of inductance L each are connected in series with opposite magnetic fluxes. The resultant inductance is (Ignore mutual inductance)

A $$100mH$$ inductor, a $$25\mu F$$ capacitor and a $$15\Omega$$ resistor are connected in series to a $$120V$$, $$50Hz$$ ac source. Calculate
(a) impedance of the circuit at resonance
(b) current at resonance
(c) resonant frequency

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

Find the maximum value of current when inductance of two henry is connected to $$150V,50$$ cycle supply