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Current is flowing from a conductor of n...

Current is flowing from a conductor of nonuniform cross sectional area. If `A_1 gt A_2,` then find relation between
a. `i_1 and i_2`
b. `j_1 and j_2`
c. `(v_d)_1 and (v_d)_2` (drift velocity)
where I is current, j is current density, and V is drift velocity.

Text Solution

Verified by Experts

The correct Answer is:
`i_(1)=i_(2),V_(1)ltV_(2), j_(1)ltj_(2)`
(a) I = charge flowing through a cross-section per unit time.
`therefore i_(1)=i_(2)`
(b) `j=i/A"as "A_(1)gtA_(2)" then "j_(1)ktj_(2)`
( c) `j="nev"_(d)`
`V_(d)=j/("ne")"as "j_(1)gtj_(2)" then ,"V_(1)ltV_(2)`
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