Advanced Resistivity calculations

a 4mm² copper conductor has a resistivity value of 17.2μΩ per mm, and is 25 metres long. Calculate its total resistance value
1. 0.108Ω
2. 0.000108Ω
3. 1.08Ω
4. 0.0108Ω
a 16mm² aluminium conductor has a resistivity value of 28μΩ per mm, and is 100 metres long. Calculate its total resistance value
1. 0.175Ω
2. 1.75Ω
3. 17.5Ω
4. 0.0175Ω
a 25mm² aluminium conductor has a resistivity value of 28nΩ per metre, and is 45 metres long. Calculate its total resistance value
1. 0.05Ω
2. 0.5Ω
3. 5Ω
4. 0.005Ω
a copper conductor has a resistivity value of 17.2nΩ per metre and an area of 6mm². If the length is 28 metres calculate the total resistance
1. 0.08Ω
2. 0.8Ω
3. 0.008Ω
4. 8Ω
a 35mm² copper conductor has a resistivity value of 17.2μΩ per mm, and is 35 metres long. Calculate its total resistance value
1. 0.0172Ω
2. 0.00172Ω
3. 1.72Ω
4. 17.2Ω
a 50mm² aluminium conductor has a resistivity value of 28nΩ per metre, and is 30 metres long. Calculate its total resistance value
1. 0.017Ω
2. 0.17Ω
3. 1.7Ω
4. 0.0017Ω
a copper conductor has a resistivity value of 17.2nΩ per metre and a resistance of 0.38Ω. If the length is 33 metres calculate the area of the conductor
1. 1.5mm²
2. 2.5mm²
3. 4mm²
4. 1mm²
a copper conductor has a Ρ value of 17.8x10^-9Ω per metre and is 77 metres long. if its resistance is 0.039Ω Calculate its c.s.a (cross sectional area)
1. 35mm²
2. 25mm²
3. 16mm²
4. 50mm²
a 0.047Ω copper conductor has a ρ value of 17.8x10^-6Ω per mm and is 42 metres long. Calculate its c.s.a (cross sectional area)
1. 16mm²
2. 35mm²
3. 35mm²
4. 35mm²
a 55.4mΩ aluminium conductor has a ρ value of 28μΩ per mm and is 99 metres long. Calculate its c.s.a (cross sectional area)
1. 50mm²
2. 70mm²
3. 35mm²
4. 95mm²
a 0.06Ω copper conductor has a ρ value of 17.8 μΩ per mm and c.s.a (cross sectional area) of 6mm². Calculate its length expressed in metres
1. 20.22 metres
2. 35.52 metres
3. 43.75 metres
4. 29.45 metres
a 0.05Ω copper conductor has a ρ value of 17.2nΩ per m and c.s.a (cross sectional area) of 16mm². Calculate its length expressed in metres
1. 46.5 metres
2. 25.6 metres
3. 43.7 metres
4. 29.2 metres
a 90mΩ copper conductor has a ρ value of 17.2μΩ per mm and c.s.a (cross sectional area) of 25mm². Calculate its length expressed in metres
1. 130.8 metres
2. 85.6 metres
3. 150.7 metres
4. 175.5 metres
a 140mΩ aluminium conductor has a ρ value of 28nΩ per m and c.s.a (cross sectional area) of 70mm². Calculate its length expressed in metres
1. 350 metres
2. 170 metres
3. 290 metres
4. 410 metres
a 55.8mΩ aluminium conductor has a ρ value of 28μΩ per mm and c.s.a (cross sectional area) of 95mm². Calculate its length expressed in metres
1. 189 metres
2. 159 metres
3. 229 metres
4. 149 metres
a 120.55mΩ copper conductor has a ρ value of 17.8μΩ per mm and c.s.a (cross sectional area) of 2.5mm². Calculate its length expressed in metres
1. 16.9 metres
2. 20.5 metres
3. 35.6 metres
4. 42.8 metres
an unknown conductor material has a resistance of 0.954Ω and a length of 60 metres and c.s.a (cross sectional area) of 1 mm². Calculate its ρ (Resistivity value) so we can identify the correct conductor material.
1. 15.9nΩ per metre (silver)
2. 17.2nΩ per metre (copper)
3. 28nΩ per metre (aluminium)
4. 48.2nΩ per metre (manganin)
an unknown conductor material has a resistance of 0.55125Ω and a length of 45 metres and c.s.a (cross sectional area) of 4 mm². Calculate its ρ (Resistivity value) so we can identify the correct conductor material.
1. 49nΩ per metre (constantan)
2. 17.2nΩ per metre (copper)
3. 28nΩ per metre (aluminium)
4. 10.6nΩ per metre (platinum)
an unknown conductor material has a resistance of 1456mΩ and a length of 130 metres and c.s.a (cross sectional area) of 0.5 mm². Calculate its ρ (Resistivity value) so we can identify the correct conductor material.
1. 5.6μΩ per mm (tungsten)
2. 15.9μΩ per mm (silver)
3. 100μΩ per mm (nichrome)
4. 9.71μΩ per mm (iron)
an unknown conductor material has a resistance of 15.23Ω and a length of 99 metres and c.s.a (cross sectional area) of 0.65 mm². Calculate its ρ (Resistivity value) so we can identify the correct conductor material.
1. 100μΩ per mm (nichrome)
2. 15.9μΩ per mm (silver)
3. 5.6μΩ per mm (tungsten)
4. 9.71μΩ per mm (iron)
an unknown conductor material has a resistance of 2.665Ω and a length of 88 metres and c.s.a (cross sectional area) of 0.35 mm². Calculate its ρ (Resistivity value) so we can identify the correct conductor material.
1. 10.6μΩ per mm (platinum)
2. 15.9μΩ per mm (silver)
3. 5.6μΩ per mm (tungsten)
4. 9.71μΩ per mm (iron)
an unknown conductor material has a resistance of 49.84mΩ and a length of 28 metres and c.s.a (cross sectional area) of 10x10^-6 m². Calculate its ρ (Resistivity value) so we can identify the correct conductor material.
1. 17.8μΩ per mm (copper)
2. 28μΩ per mm (aluminium)
3. 5.6μΩ per mm (tungsten)
4. 9.71μΩ per mm (iron)
a copper conductor has a ρ value of 1.78x10 ^-8 Ω per metre and is 25 metres long. If its resistance is 17.8mΩ calculate its c.s.a (cross sectional area) in mm²
1. 25 mm²
2. 2.5 mm²
3. 250 mm²
4. 0.25 mm²
a copper conductor has a ρ value of 0.28x10 ^-7 Ω per metre and is 280 metres long. If its resistance is 31.36mΩ calculate its c.s.a (cross sectional area) in mm²
1. 250 mm²
2. 25 mm²
3. 2.5 mm²
4. 0.25 mm²
Identify the correct area conversion
1. 2.5mm² = 2.5 x10^-6m²
2. 2.5mm² = 2.5 x10^-5m²
3. 2.5mm² = 2.5 x10^-4m²
4. 2.5mm² = 2.5 x10^-3m²
Identify the correct area conversion
1. 16mm² = 16 x10^-6m²
2. 16mm² = 16 x10^-5m²
3. 16mm² = 16 x10^-4m²
4. 16mm² = 16 x10^-3m²
Identify the correct area conversion
1. 4x10^-6 m² = 4 mm²
2. 4x10^-3 m² = 4 mm²
3. 4x10^-2 m² = 4 mm²
4. 4x10^-1 m² = 4 mm²
Identify the correct area conversion
1. 6x10^-6 m² = 6 mm²
2. 6x10^-3 m² = 6 mm²
3. 6x10^-2 m² = 6 mm²
4. 6x10^-1 m² = 6 mm²
Identify the correct length conversion
1. 65 metres = 65 x10³ mm
2. 65 metres = 65 x10^-3 mm
3. 65 metres = 65 x10⁴ mm
4. 65 metres = 65 x10^-4 mm
Identify the correct length conversion
1. 85.85 metres = 85850 mm
2. 85.85 metres = 858500 mm
3. 85.85 metres = 8585 mm
4. 85.85 metres = 858.5 mm
Identify the correct length conversion
1. 45680mm = 6 x10^-3 m
2. 45680mm = 6 x10³ m
3. 45680mm = 6 x10⁴ m
4. 45680mm = 6 x10^-4 m
Identify the correct length conversion
1. 5050.90 mm = 50.51 m
2. 5050.90 mm = 505.1 m
3. 5050.90 mm = 5.51 m
4. 5050.90 mm = 5051 m

Advanced Resistivity calculations

Advanced Resistivity Calculations - calculating resistance (R), length (L), c.s.a (area) and ρ (material), transposition of formulas, mixed number systems, length and area conversions, powers of 10 and symbols: 10 advanced questions from a big bank of questions© K.Brown 2025

Advanced Resistivity Calculations - calculating resistance (R), length (L), c.s.a (area) and ρ (material), transposition of formulas, mixed number systems, length and area conversions, powers of 10 and symbols: 10 advanced questions from a big bank of questions
© K.Brown 2025