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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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- A stone is tied to a string of length l and whirled in a vertical circle with the other end
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Volume of gas becomes four times if temperature becomes
- A stone is tied to a string of length l and whirled in a vertical circle with the other end
- Two stones of masses m and 2m are whirled in horizontal circles, the heavier one
- Which of the two have same dimensions?
- 10 mA current can pass through a galvanometer of resistance 25 ohm.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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