Alternating Cur...

In alternating current:

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

A $$100\Omega$$ resistor is connected to a $$220V, 50Hz$$ AC supply. Find $$rms$$ value of current in the circuit :

A light bulb is rated at $$100W$$ for a $$220V$$ supply. Find the rms current through the bulb:

A condenser of  $$250 \mu F$$ is connected in parallel to a coil of inductance  0.16 mH, while its effective resistance is $$20 \Omega$$. Determine the resonant frequency.

In R-L-C series circuit, the potential differences across each element is $$20V$$. Now the value of the resistance alone is doubled, then P.D. across R, L and C respectively.

In A.C. circuit in which inductance and capacitance are joined in series, current is found to be maximum when the value of inductance is $$0.5H$$ and the value of capacitance is $$8\mu F$$. The angular frequency of applied alternating voltage will be

The reactance of coil when used in an A.C. power supply ( 220volts, 50 cycles/sec) is 50ohms. The inductance of the coil is nearly

A series combination of resistor ($$R$$) and capacitor ($$C$$) is connected to an A.C. source of angular frequency '$$\omega$$'. Keeping the voltage same, if the frequency is changed to $$\omega/3$$, the current becomes half of the original current. Then the ratio of the capacitive reactance and resistance at the former frequency is:

In a series LCR circuit, resonance occurring at 105Hz. At that time, the potential difference across the 100 resistance is 40V while the potential difference across the pure inductor is 30v. The inductance L of the inductor is equal to