Copper and carbon wires are connected in series and the combined resistor is kept

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.

admin:

Related Questions

  1. The interferance pattern is obtained with two coherent light sources of intensity
  2. Two identical flutes produce fundamental notes of frequency 300 Hz at 27° C
  3. The condition under which a microwave oven heats up a food item containing
  4. A round disc of moment of inertia i₂ about its axis perpendicular to its plane
  5. A n-p-n transistor is connected in common emitter configuration in a given amplifier.