Does drift velocity depend on diameter? Answer:
Drift velocity does not depend on the cross-sectional area or the diameter of any conductor
. For the same potential difference here, with V across the conductor, an increase in the cross-sectional area decreases the resistance R=(ρ.
Does drift velocity change with diameter?
Thus, drift velocity is independent of diameter so
it does not change
.
What is the relation between drift velocity and diameter?
Since the drift velocity is
inversely proportional to square of the diameter of the wire
, the drift velocity will surely increase if the diameter decreases. Since the diameter has decreased by the factor d/2, the drift velocity should be increased 4 times since it is inversely proportional to square of the diameter.
What happens to drift velocity when diameter is doubled?
On what factors does drift velocity depend on?
The drift velocity is known to be primarily dependent on the
applied voltage
and another property on which it depends is the molecular structure of the wire and hence the material of the conductor. Slight temperature dependence is also observed.
Will drift velocity change if diameter is halved?
Thus when diameter is halved
the drift velocity increases to 4 times the initial drift velocity
.
How does changing the diameter of the wire affect the drift velocity of the electrons in the wire?
c) The drift speed is proportional to the current density and therefore it is inversely proportional to the square of the diameter of the wire.
Increasing the diameter by some factor decreases the drift speed by the square of that factor
.
Does drift velocity depend upon area?
Therefore,
drift velocity is directly proportional to the cross sectional area
i.e. vd∝1A. Hence, if the area of the cross section is non-uniform, the drift velocity of the electrons is not constant for the whole length of the conductor.
Does drift velocity increase with area?
The correct option is 1. CONCEPT: Drift velocity: In a material, The average velocity attained by charged particles due to an electric field is called drift velocity. From the above, it is clear that
drift velocity is inversely proportional to the cross-section area of the conductor
.
How does drift velocity vary with length?
At constant potential difference, drift velocity is
inversely proportional
to the length of the conductor.
How is the electron drift velocity affected if radius RRR is doubled?
If current is kept constant then we can see that drift velocity is inversely proportional to area of cross-section of wire. Hence inversely proportional to square of radius of wire , which means that doubling the radius of wire will
decrease the drift velocity by a factor of four
.
When the diameter of a conductor is doubled its resistance?
When diameter is doubled, the resistance becomes
R′=π(2d/2)ρL=R/4
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What happens to the drift velocity of electron if it moves from thicker to thinner copper wire?
If a current flows from a thick copper wire into a thinner copper wire, the electrons will slow down (
their drift velocity decreases
).
Does drift velocity depend on voltage?
v
d
is the drift velocity of the charge carriers.
It is primarily controlled by the applied voltage, although it also depends the molecular structure of the wire
. (In an ohmic device this velocity is directly proportional to applied voltage and thus provides the linear relationship between current and applied voltage.)
Does drift velocity depends on potential difference?
We can see that
drift velocity vd is directly proportional to applied potential difference across the conductor
. So, if the applied potential difference is doubled then the drift velocity of electrons will also get doubled.
Does drift velocity depend on magnetic field?
Yes. The drift velocity of the electrons is dependent on the applied electric field
.
Why does drift velocity decrease with increase in area?
If you reduce the area while keeping the current constant, the velocity must increase because
the same number of electrons per second must pass a smaller cross-section area
.
How is the drift velocity affected when V is doubled and L is halved?
When the radius of a copper wire is doubled?
How does drift velocity depend on electric field E?
Thun, we can say that the drift velocity of the electrons and their current density are directly proportional to each other. Also,
when the electric field intensity increases, the drift velocity increases
and the current flowing through the conductor also increases.
What will be the effect of change in the length and thickness of the electrical wire in the experiment of electric current potential difference and electric resistance?
Answer: Resistance is proportional to the wire’s length and with the cross section area of the wire it is
inversely proportional
.
How drift velocity will change when a potential difference V is applied to a conducting wire of length L and diameter D if we potential is doubled?
So, drift velocity is independent of diameter. so
it will not change
.
How can drift velocity be increased?
Why does speed increase when cross-sectional area decreases?
Speed increases when cross-sectional area decreases, and speed decreases when cross-sectional area increases. This is
a consequence of the continuity equation
. If the flow Q is held constant, when the area A decreases, the velocity v must increase proportionally.
Is current density is always dependent on drift velocity why justify your answer?
The current density in a conducting wire increases due to an increase in current.
The drift velocity is inversely proportional to the current
(vd=nqAI), so the drift velocity would decrease.
What happens to the current if the radius is doubled?
The relation for drift velocity i=neυdA From it when current is constant Aυd is constant when radius is doubled,
area becomes four times
. Hence the drift velocity become one fourth (41) .
When a wire carries a current of 1.20 A the drift velocity?
Is drift velocity independent of time?
Drift velocity is the average velocity of electrons in presence of electric field, which is
independent of time
.
What happens to resistance when diameter is halved?
What happens to resistance when diameter is half?
What is the effect on the current flow with increased diameter of conductor?
Explanation: Increased diameter of conductor
allows high current flow
.
What is significantly less in the thick wire than in the thin wire?
What happens to electric field when length is doubled?
and, electric field E is equal to V/l. This implies,
the drift velocity of electrons would reduce to half of it’s initial value
when the length of the wire is doubled.
What happens to the drift velocity of electrons and to the resistance?
“
When length is doubled, the drift velocity is halved and the resistance is doubled
. Thus, when the length of the conductor is doubled, the drift velocity is halved.
How does drift velocity depends on applied voltage?
vd is the drift velocity of the charge carriers. It is primarily controlled by the applied voltage, although it also depends the molecular structure of the wire. (
In an ohmic device this velocity is directly proportional to applied voltage and thus provides the linear relationship between current and applied voltage
.)
Mobility is defined as the value of drift velocity over electric field strength. Therefore,
higher the drift velocity of the particle higher is the mobility
. Which means that the electron will travel at higher speed.
