shankbond
New Member
hi, guys i m a bit confused with voltages and currents how are they related and affect any electrical device?
To start a device one needs some specific voltage say 220 volts
and current is equal to I=n*A*e*(vd)
where n is number of electrons(or density)
A is cross section of device through which it is flowing
e is charge on one electron
vd is drift velocity
now to operate a device one needs that current should flow through the windings of the motor or device
the internal impedance will affect the velocity of charge carriers (i m asking ur opinion here)
it will try to decrease the velocity of charge carriers
so, a kind of same voltage has to be applied across the conductor
but
if i see it logically ,the voltage cant remain the same through out as it appears to us , it has to overcome the internal impedance of the device so as to remain a constant drift velocity(m i right?)
how is power related to both of them ?
do devices really need constant drift velocities to run properly?
kindly help me out here people
need your help here to sort things out here in my brain?
thank you
To start a device one needs some specific voltage say 220 volts
and current is equal to I=n*A*e*(vd)
where n is number of electrons(or density)
A is cross section of device through which it is flowing
e is charge on one electron
vd is drift velocity
now to operate a device one needs that current should flow through the windings of the motor or device
the internal impedance will affect the velocity of charge carriers (i m asking ur opinion here)
it will try to decrease the velocity of charge carriers
so, a kind of same voltage has to be applied across the conductor
but
if i see it logically ,the voltage cant remain the same through out as it appears to us , it has to overcome the internal impedance of the device so as to remain a constant drift velocity(m i right?)
how is power related to both of them ?
do devices really need constant drift velocities to run properly?
kindly help me out here people
need your help here to sort things out here in my brain?
thank you