Two conductors have the same resistance at \( 0^{\circ} \mathrm{C} \) but their temperature coef...

Channel:
PW Solutions
Subscribers:
453,000
Published on ● Video Link: https://www.youtube.com/watch?v=OD_Ug0fNRi8


Duration: 9:05
0 views
0

Two conductors have the same resistance at \( 0^{\circ} \mathrm{C} \) but their temperature coefficients of resistance are \( \alpha_{1} \) and \( \alpha_{2} \). The respective temperature coefficients of their series and parallel combinations are nearly
(a) \( \frac{\alpha_{1}+\alpha_{2}}{2}, \frac{\alpha_{1}+\alpha_{2}}{2} \)
(b) \( \frac{\alpha_{1}+\alpha_{2}}{2}, \alpha_{1}+\alpha_{2} \)
(c) \( \alpha_{1}+\alpha_{2}, \frac{\alpha_{1}+\alpha_{2}}{2} \)
(d) \( \alpha_{1}+\alpha_{2}, \frac{\alpha_{1} \alpha_{2}}{\alpha_{1}+\alpha_{2}} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-05-15Calculate the molality of a sulphuric acid solution of specific gravity \( 1.2 \) containing \( ...
2023-05-15If acute angle between the line \( \overrightarrow{\mathbf{r}}=\hat{\mathbf{i}}+2 \hat{\mathbf{j...
2023-05-15Six plates each of area \( A \) are arranged as shown in figure-2.259. The separation between ad...
2023-05-15Figure shows a conducting cylinder containing gas and closed by a movable piston. The cylinder i...
2023-05-15A uniform rod of length \( L \) lies on a smooth horizontal table. A particle moving on the tabl...
2023-05-15Which compounds are aromatic? For any compound that is not aromatic, state why this is so. img s...
2023-05-15A cyclist moving on a circular track of radius \( 40 \mathrm{~m} \) completes half a revolution ...
2023-05-15Differentiate the following functions with respect to \( x \) : \[\left(x+\frac{1}{x}\right)\lef...
2023-05-15For what least integral \( k \) is the quadratic trinomial \( (k-2) x^{2}+8 x+(k+4) \) is positi...
2023-05-15A vessel has nitrogen gas and water vapours in equilibrium with liquid water at a total pressure...
2023-05-15Two conductors have the same resistance at \( 0^{\circ} \mathrm{C} \) but their temperature coef...
2023-05-15\( x \mathrm{~g} \) of \( \mathrm{KHC}_{2} \mathrm{O}_{4} \) requires \( 100 \mathrm{ml} \) of \...
2023-05-15If mass of one atom is \( 3.32 \times 10^{-23} \mathrm{~g} \), then calculate number of nucleons...
2023-05-15A person adds \( 1.71 \) gram of sugar \( \left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\...
2023-05-15A hydrocarbon contains \( 86 \% \) carbon, \( 488 \mathrm{ml} \) of the hydrocarbon weight \( 1....
2023-05-15In chemical scale, the relative mass of the isotopic mixture of oxygen atoms \( \left(O^{16}, O^...
2023-05-15Range of the function \( f(x)=\log _{2}\left(\frac{4}{\sqrt{x+2}+\sqrt{2-x}}\right) \) is :  
2023-05-15Let \( \mathrm{M} \) be a \( 3 \times 3 \) invertible matrix with real entries and let I denote ...
2023-05-15Find the electric field at a point \( P \) on the perpendicular bisector of a uniformly charged ...
2023-05-15Assume that a drop of liquid evaporates by decrease in its surface energy, so that its temperatu...
2023-05-15In an astronomical telescope in normal adjustment a straight black line of length \( L \) is dra...