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Copper and carbon wires are connected in series and the combined resistor is kept at 0⁰C. Assuming the combined resistance does not vary with temperature, the ratio of the resistances of carbon and copper wires at 0⁰C is (Temperature coefficients of resistivity of copper and carbon respectively are 4×10⁻³/ ⁰ C and -0.5×10⁻³/ ⁰ C )
Options
(a) 4
(b) 8
(c) 6
(d) 2
Correct Answer:
8
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Equal charge q each are placed at the vertices AQ and B of an equilateral triangle
- Diameter of the objective of a telescope is 200 cm. What is the resolving power
- The number of possible natural oscilations of air column in a pipe closed
- A ball is dropped from a height of 20 cm. Ball rebounds to a height of 10cm
- A spherical drop of mercury having a potential of 2.5 v is obtained as a result
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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