What does Rheostat controls? electron drift velocity or quantity of electrons? We know I=nAve I=current n=quantity of electron A=conductor area e=electron charge v=drift velocity (Asked Partha)
Category: alternating currents
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Why direct currents aren’t used in Home circuits?
How can an alternating current change its direction while moving in a wire or any conductor? Why direct currents aren’t used in Home circuits?
RAHUL ASKED
Answer:
Alternating current is produced by rotating a coil in a strong magnetic field (or …