Answer / senthil nathan

speed of current depends upon choice of material which is
used for electricity,potential difference exists and
resistivity of the material.
These factors fixing the speed of the current.

Answer / sunil

all above answers are wrong.......
the speed of current is the speed of electrons moving in a
conductor....which is the well known DRIFT VELOCITY.....its
magnitude is very less as compared to speed of light....

friends,actually it is the electric field which propagates
with the speed of light in space.........

Answer / bym

The speed of electrons as they travel down a copper wire is
measured in millimeters/sec. This speed changes as the
voltage, amperage, wire material, and wire size change. This
is called the "drift velocity".

However, a signal will travel down a wire at slightly less
than the speed of light: ~2/3 light speed in a coaxial
cable. This is the propagation speed. The exact propagation
speed is different for different wire materials. Shielding
of the wire also changes propagation speed. The speed
further changes depending on heat & pressure, though in
general, we don't experience enough difference to notice.

Think of it as the difference between wind and sound. The
movement of the electrons is analogous to wind, which rarely
goes faster than 40 mph, and depends on pressure differences
(applied voltage). Where as the speed of the signal is
analogous to the speed of sound, which is ~700 mph,
depending on heat and pressure (state of the material).

Answer / ujjawal

ani eri puku answers a okati correct ga ledhu

Answer / akarshan tiwari

The electron drift velocity is estimated to be very
slow.how there is current established almost the instant
the circuit is closed?
The information about bigining of the flow of current is
transmitted through the propogation of electromanetic waves
(electric impulse)and not with the drift velocity of the
electron.

Answer / raja

THe speed of current is the velocity of flow of free electrons.

Answer / sunil yadav

the speed of current is the rate of flow of electrons in a
conductor.. n that is the DRIFT VELOCITY... the speed of
current being equal to the speed of light is a pure
misconception...
drift velocity=(mu)*E
mu= electron mobility; it's value depends on the type of
material..

Answer / imran yousuf zaregar

simple speed of current depends on voltage...... so, speed
of current varies with respect to voltage.

Answer / dhiva

speed of current depends upon flow of electrons which will
consider load and size of conductorand resistance.

Answer / birobrata deb

speed of the current depends upon the drift velocity of the
electron of that conductor through which the current is
flowing...

what is kVA

6 Answers   TATA, Tata Motors,

In a single how much maximum current and watts using

0 Answers  

what is the bus bar size of 2700 amp ACB breaker ? and what is the cable size ?pls detailed answer ?

3 Answers  

What are the maximum and minimum ratings of MCB,MCCB,ACB,OCB,VCB and SF6 breakers?

2 Answers   ABB, SK E&C, Sodexo,

What is trickle charging system?

2 Answers   Absotherm,

Induction motor & transformer both has magnetic core,then why induction motor is a inductive load & transformer not???

6 Answers   SBL,

sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance

0 Answers  

how to difference between the HT&LT cables

1 Answers   L&T,

What is sensitivity of a measurement?

0 Answers  

What is the differences in phase to phase voltages between star and delta connections of stator?

1 Answers  

Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?

0 Answers  

What is the max value of neutral current that can be allowed in system?

0 Answers