If length of the wire becomes two times to its original value and area becomes one half to its original value then the resistance of the wire becomes:
A. Double
B. Four times
C. One half
D. One fourth
Right answer is B.
Explanation:
R=ρ L/A
R=ρ 2/1/2
R=ρ 2×2
R=ρ 4.
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Answers
Answered by
3
Explanation:
Given,
l = 2l
A = A / 2
R = ρl/A
= ρ × 2l × 2 /A
R = 4 ρ
Answer : four times
Answered by
6
Answer:
Right answer is B.
Explanation:
R=ρ L/A
R=ρ 2/1/2
R=ρ 2×2
R=ρ 4.Right answer is B.
Explanation:
R=ρ L/A
R=ρ 2/1/2
R=ρ 2×2
R=ρ 4.
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