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The Flow of Electrons as Electric Current

If 2i current...

Question

If 2i current flows through the metal having double the area of cross-section, then the drift velocity will

A

\N

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B

0.5v

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C

v

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D

4v

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Solution

The correct option is C v
v

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Similar questions

Q. When current

i

is flowing through a conductor, the drift velocity is

v

. If the value of current through the conductor and its area of cross-section is doubled, then new drift velocity will be

I

' flows through a metallic wire of radius '

r

' and the free electrons in it drift with a velocity

v_{d}

. Calculate the drift velocity of the free electrons through the wire of the same material, having double the radius, when some current flows through it.

Q. Current is flowing through a conductor of non-uniform cross-section. If

A_{1} > A_{2}

, then the relation between the drift velocity

(V)

and current at the two cross- sections respectively, will be

Q. A steady current is set up in a metallic wire of non-uniform cross section. Then the drift velocity is related to the area of cross section (A) as:

Q. The area of cross section of a conductor is

10 c m^{2}

and a current of

3 A

is flowing through it. The drift velocity of electrons is

4 \times 10^{- 4} m s^{- 1}

. What will be the new cross sectional area if we are increasing the drift velocity to

7 \times 10^{- 3} m s^{- 1}

keeping the current flow constant?

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