Questions
A copper rod ABCD is bent in the form of a circular arc as shown in the figure and its two end are connected to the terminals of a battery. If drift velocity of free electrons at the edges AB and CD are V1 and V2 respectively, then
detailed solution
Correct option is C
consider two arc like elements, each of cross sectional area ∆A, near the edges AB and CD.Now Vd=jne=Eρ.l∆A.∆A.ne=Eρnel⇒Vd∝1lsince the arc length AB is greater than CD, we can conclude V1 < V2 .Talk to our academic expert!
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A potential difference is applied across the ends of a metallic wire. If the potential difference doubled, the drift velocity
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