Question 23M.2.SL.TZ2.4bi

ALTERNATIVE 1 (Calculation of length)
Read off from graph [2.8 − 3.2 × 10⁻⁵ Ω m]✓
Use of $I=\frac{RA}{\rho }$✓
l = 1.3 − 1.4 «m» ✓

ALTERNATIVE 2 (Calculation of area)
Read off from graph [2.8 − 3.2 × 10⁻⁵ Ω m]✓
Use of $A=\rho \frac{I}{R}$✓

A = 8.3 − 9.5 × 10⁻⁶ «m²» ✓

ALTERNATIVE 3 (Calculation of resistance)
Read off from graph [2.8 − 3.2 × 10⁻⁵ Ω m]✓
Use of $R=\rho \frac{I}{A}$✓

R = 3.6 − 4.2 «Ω» ✓

ALTERNATIVE 4 (Calculation of resistivity)
Use of $\rho =\frac{RA}{I}$✓

$\rho$ = 3.2 × 10⁻⁵ «Ω m» ✓

Read off from graph 260 – 280 K ✓