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The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then
Options
(a) The resistance will be doubled and the specific resistance will be halved
(b) The resistance will be halved and the specific resistance will remain unchanged
(c) The resistance will be halved and the specific resistance will be doubled
(d) The resistance and the specific resistance both will remain unchanged
Correct Answer:
The resistance will be halved and the specific resistance will remain unchanged
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which two of the following five physical parameters have the same dimensions?
- Two planets at mean distances d₁ and d₂ from the sun have their frequencies n₁ and n₂
- The moment of inertia of a thin circular disc about an axis passing through its centre
- If energy(E), velocity(V) and time(T) are chosen as fundamental quantities,
- A ball is thrown vertically downwards from a height of 20 m with an initially
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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