Question

Two metal wires of identical dimension are connected in series. If σ₁ and σ₂ are the conductivities of the metal wires respectively, the effective conductivity of the combination is:
(a) $\frac{\sigma_{1}+\sigma_{2}}{2\sigma_{1}\sigma_{2}}$
(b) $\frac{\sigma_{1}+\sigma_{2}}{\sigma_{1}\sigma_{2}}$
(c) $\frac{\sigma_{1}\sigma_{2}}{\sigma_{1}+\sigma_{2}}$
(d) $\frac{2\sigma_{1}\sigma_{2}}{\sigma_{1}+\sigma_{2}}$

Answer 1

find dimension of A × B in relation

$f = \frac{a - {x}^{2}}{bt}$

find dimension of A × B in relation

$f = \frac{a - {x}^{2}}{bt}$

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