Alternating Cur...

In an LCR circuit the potential difference between the terminal of the inductance is $$60\ V$$, between the terminals of the capacitor is $$30\ V$$ and that between the terminals of the resistance is $$40\ V$$. The supply voltage will be equal to:

The peak value of an alternating e.m.f. E given by $$E={ E }_{ 0 } \cos\omega t$$ is 10 volt and frequency is 50 Hz. At time $$t = (1/600)$$ sec, the instantaneous value of e.m.f. is

A series LCR circuit is tuned to resonance. If the angular frequency of the applied AC voltage at resonance is $$\omega $$, the impedance of the circuit then is:

A series $$LCR$$ circuit is connected to a source of alternating emf $$50 \ V$$ and if the potential differences across inductor and capacitor are $$90\  V$$ and $$60\  V$$ respectively, the potential difference across resistor is:

A $$100\Omega$$ resistor is connected to a $$220V,50Hz$$ AC supply. Find rms value of current in the circuit and the net power consumed for a complete cycle.

A light bulb is rated at $$100W$$ for a $$220V$$ supply. Find the peak voltage of the source:

A sinusoidal voltage $$V=200sin314t$$ is applied to a $$10\Omega$$ resistor. Find rms current.

A light bulb is rated at $$100W$$ for a $$220V$$ supply. Find the resistance of the bulb:

 A sinusoidal voltage $$V=200sin314t$$ is applied to a $$10\Omega$$ resistor. Find rms voltage.

A sinusoidal voltage $$V=200sin314t$$ is applied to a $$10\Omega$$ resistor. Find the frequency of the supply.