the velocity of current is the same of light, that value is about 300000km/ sec...That's 300 millions per meter per sec..
Description : What is the difference between eddy current and hysteresis loss?
Answer : Loss occurred by magnetising and demagnetising process is called histerisis loss and the current flowed due to the magnetic field produced by the electric field applied is called eddy current losses
Description : what is the difference between AC and DC current ?
Answer : AC is generated using Alternator. DC is generated using DC generator. AC changes its direction periodically. DC do not change its direction periodically. AC have non zero frequency. DC have zero ... Power factor of AC is between 0 and 1. But power factor of DC is always 1.
Description : Describe the difference between direct and alternating current.
Answer : Direct current is the flow of electricity or charge in one direction.. Alternative current is the flow of charge that doesn't flow in one direction.
Description : Explain why potential difference is necessary to produce current in a circuit.
Description : The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that?
Answer : The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that both waves must have same frequency.