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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
- When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
- A photocell employs photoelectric effect to convert
- Work of 3.0×10⁻⁴ joule is required to be done in increasing the size of a soap film
- A thin convex lens of refractive index 1.5 has 20 cm focal length in air. If the lens
- A man weighing 60 kg climbs a staircase carrying a 20 kg load on his hand
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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