Two wires of equal diameters, of resistivities \( \rho_{1} \) and \( \rho_{2} \) and lengths \( ...
Channel:
Subscribers:
510,000
Published on ● Video Link: https://www.youtube.com/watch?v=4aZ46Wb9g1s
2Two wires of equal diameters, of resistivities \( \rho_{1} \) and \( \rho_{2} \) and lengths \( l_{1} \) and \( l_{2} \), respectively, are joined in series. The equivalent resistivity of the combination is
(A) \( \frac{\rho_{1} l_{1}+\rho_{2} l_{2}}{l_{1}+l_{2}} \)
(B) \( \frac{\rho_{1} l_{2}+\rho_{2} l_{1}}{l_{1}-l_{2}} \)
(C) \( \frac{\rho_{1} l_{2}+\rho_{2} l_{1}}{l_{1}+l_{2}} \)
(D) \( \frac{\rho_{1} l_{1}-\rho_{2} l_{2}}{l_{1}-l_{2}} \)
ЁЯУ▓PW App Link - https://bit.ly/YTAI_PWAP
ЁЯМРPW Website - https://www.pw.live