Navigate

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.

EAMCET2013
admin:

Related Questions

  1. A galvanometer of resistance 50Ω is connected to a battery of 3 V along with a resistance
  2. Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted
  3. In an AC generator, a coil with N turns, all of the same area A and total resistance R,
  4. Infinite number of masses, each 1 kg, are placed along the x-axis
  5. A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.