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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
- An object is seen through a simple microscope of focal length 12 cm.
- An ac voltage is applied to a resistance R and an inductor L in series
- A pure semiconductor behaves slightly as a conductor at
- A boat of anchor is rocked by waves whose crests are 100 m apart and velocity
- A body is hangfing from a rigid support by an inextensible string of length
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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