A conducting wire of length ‘ l ’,area of cross-section A and electric resistivity ρ is connected between the terminals of a battery. A potential difference V is developed between its ends causing an electric current. If the length of the wire of the same material is doubled and the area of cross-section is halved, the resultant current would be :
A conducting wire of length ‘ l ’,area of cross-section A and electric resistivity ρ is connected between the terminals of a battery. A potential difference V is developed between its ends causing an electric current. If the length of the wire of the same material is doubled and the area of cross-section is halved, the resultant current would be :
Option 1 -
4 VA/ρl
Option 2 -
ρl/4VA
Option 3 -
3 VA/4ρl
Option 4 -
VA/4ρl
Asked by Shiksha User
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1 Answer
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Correct Option - 4
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