What is the differnece between steady current and d.c.?

What is the difference between hole-current and electron current?

What is the difference between direct current and alternating current? How many times does AC used in India change direction in one second?

What is phase difference between the e.m.f. and current is an a.c. circuit contains a pure capacitance?

Phase difference between voltage and current in a.c. circuit having resistor only is:

The phase differnece between the current and the voltage in series LCR circuit as resonance is

What is the basic differnece between source of light and a source of radiowaves?

The power factor of an a.c. circuit is 0.5. what will be the phase difference between voltage and the current?