Question

. The resistivity of silver is 1.6x 10-6Ωm .What will be the resistance of a silver
wire of length 10m and cross-sectional area 2x10-6m2
?

Answer 1

The Given information :-

• Resistivity of silver = 1.60 × 10^{-6} Ω m.  

• Length of the silver wire = 10 m.
• Area of cross section = 2 × 10^{-3} m².

We need to find :-

• Resistance.

Formulae used :-

R = rho * l/A

Solution :-

Substituting the information,

R = 1.60 × 10^{-6} * [10/2 × 10^{-3}]

R = 160/100000000 * 10/(2/1000)

R = 16/10000000 * 10 * 1000/2

R = 16/1000000 * 1000/2

R = 16/1000 * 1/2

R = 8/1000

R = 0.008 ohm