What will be the instantaneous voltage for an a.c. supply of 230 V and 50 Hz?

What will be the instantaneous voltage for a.c. supply of 220 V at 50 hertz ?

An inductor (L = 200 mH) is connected to an AC source of peak emf 210 V and frequency 50 Hz . Calculate the peak current. What is the instantaneous voltage of the source when the current is at its peak value?

The primary winding of a transfomer has 50 turns while its secondary has 500 turns. If the primary is connected to an a.c. supply of 220 V, 50 Hz, then the output at the secondaray will be

An ideal choke takes a current of 8A when connected to an a.c. source of 100 volt and 50Hz . A pure resistor under the same conditions takes a current of 10A . If two are connected in series to an a.c. supply of 100V and 40Hz , then the current in the series combination of above resistor and inductor is

The peak voltage of an ac supply is 440 V, then its rms voltage is