When a current I is set up in a wire of radius r, the drift speed is vd. If the same current is set up through a wire of radius 2r

Question

When a current I is set up in a wire of radius r, the drift speed is vd. If the same current is set up through a wire of radius 2r

When a current I is set up in a wire of radius r, the drift speed is v_d. If the same current is set up through a wire of radius 2r, then the drift speed will be

(A) v_d/4

(B) v_d/2

(C) 2v_d

(D) 4v_d

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct option is: (A) v_d/4

4 views Answered 2023-02-05 15:29