Two wires of equal length, one of copper and the other of manganin, have the same resistance. Which wire is thicker?

Two wires of equal length, one of aluminium and the other of copper, have the same resistance. Which of the two wires is lighter ? Hence, explain why aluminium wires are preferred for overhead power cables. (rho _(Al)=2.63xx10^(-8)Omega -m ,P_(Cu)=1.72xx10^(-8)Omega -m , relative density of Al=2.7,of cu =8.9)

Two wires of equal length , one of aluminimum and the other of copper have the same resistance.Which of the two wires is lighter? Hence explain why aluminium when are preferred for over head power cables . [rho_(Al)=2.63times10^-8Omega.m,rho_(Ca)=1.72times10^-8Omega.m relative density of Al=2.7 of Cu=8.9].

Two wire, one of copper and other of iron, are of the same length and same radius. Which will have more resistance?

Two copper spheres of equal radii, one hollow and the other solid are charged to the same potential. Which one does carry more charge?

The iron wires of equal length are taken. One of them is thick and the other is thin. In which case will young's modulus be greater?

Two wires A and B have equal lengths and are made of the same material. But the diameter of A is twice that of wire B. Then for a given load

In a sonometer, two adjacent wires of the same material are stretched under the same tension. The first wire is thicker than the other. The corresponding frequencies of length l_(1) and l_(2) of the sonometer wires are in unison with a tuning fork. Which of the following is correct ? Give reasons. (i) l_(1) = l_(2) (ii) l_(1) lt l_(2) (iii) l_(1) gt l_(2)