Alternating Cur...

The simplest type of AC voltage or current is the one which

An a.c. supply of 100 volts is applied to a capacitor of capacitance 20 $$\mu$$ F. If the current in the circuit is 0.628 A, the frequency of a.c. must be

In a circuit L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45$$^o$$. The value of C is

In an A.C. circuit, the current flowing in inductance is $$\displaystyle I=5\sin { \left( 100t-{ \pi  }/{ 2 } \right)  } $$ ampers and the potential difference is V = 200 sin (100 t) volts. The power consumption is equal to 

Assertion: A capacitor blocks direct current in the steady state. 
Reason : The capacitive reactance of the capacitor is inversely proportional to frequency f of the source of emf. 

Why the current produced by the generator is  called an alternating current?

In an ideal parallel LC circuit, the capacitor is charged by connecting it to a D.C. source which is then disconnected. The current in the circuit 

A lamp is connected in series with a capacitor and an AC source. What happens if the capacity of the capacitor is reduced?

L, C, R represent physical quantities inductance, capacitance and resistance respectively. The combinations which have the dimensions of frequency are 

The Current in resistance R at resonance is