Question

Consider the rectangular prism shaped wire shown in the figure below where the cross sectional part is a square with sides d=10.1 mm. The current runs along the length of the wire where ℓ =7.3 m and the wire has cylindrical hole along its length with a cross sectional area of A=21 mm2. If the wire is made out of a material whose resistivity is 126 × 10-6Ω.m , determine the resistance of the wire.

Please express your answer in units of Ω using one decimal places.

Consider the rectangular prism shaped wire shown in the figure below where the cross sectional part is a square with sides d=10.1 mm. The current runs along the length of the wire where -7.3 m and the wire has cylindrical hole along its length with a cross sectional area of A-21 mm². If the wire is made out of a material whose resistivity is 126 x 10-60.m. determine the resistance of the wire. Please express your answer in units of using one decimal places. { d d

Answer 1

Sol! know we Resistance R = el A Here À is the area of cross section. A= A - A A = arer of cross section of Square A2 = of cross section of hole. area 102.01 mm2 Aj = 10.1 mm x 10.1 mm m2 Aj - 1.0201 4164 al mm = a1x 108m . Az Azlet Azad.1 x 105 ur ; A = A, -A,= 8.101110 wyl R= el 1267164723 8.101.705 A 11.3542 Resistance R = 11.42