the question: find the inductance of a coil that must be placed in series with a lamp requiring 2A, 400W at unity power factor when he supply is 230V, 50Hz.
what exactly is a coil? i have read up on it, sometimes people say that coil is a inductor and a resistor, some people also say its just a inductor. im confused. help pls. thanks.
what exactly is a coil? i have read up on it, sometimes people say that coil is a inductor and a resistor, some people also say its just a inductor. im confused. help pls. thanks.