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Current flows through a metallic conduct...

Current flows through a metallic conductor whose area of cross-section increases in the direction of the current. If we move in this direction,

A

the current will decrease.

B

the current will increase.

C

the drift velocity will increase.

D

the drift velocity will decrease.

Text Solution

Verified by Experts

The correct Answer is:
d
Whatever be the cross-section, current remains the same. When a steady current flows through a metallic conductor of non-uniform cross-section, then drift velocity is given as
`v_d = I/(n eA)`
or `v_d prop 1/A`
Thus, current remains constant and drift velocity will decrease.
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