Resistivity
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Q. A copper wire has a resistivity of 1.68 x 10^-8 Ω·m. What is the resistance of a 100 m long wire with a cross-sectional area of 1 mm²?
Q. A cylindrical conductor has a length L and radius r. If the radius is doubled while keeping the length constant, how does the resistivity change?
Q. A cylindrical conductor has a length of 1 m and a radius of 0.01 m. If its resistivity is 2 x 10^-8 Ω·m, what is its resistance?
Q. A cylindrical wire has a length of 1 m and a radius of 0.5 mm. If its resistivity is 1.68 x 10^-8 Ω·m, what is its resistance?
Q. A wire has a resistance of 10 ohms at 20°C. If the temperature coefficient of resistivity is 0.004/°C, what will be its resistance at 100°C?
Q. A wire has a resistance of 10 Ω at 20°C. If the temperature coefficient of resistivity is 0.004/°C, what will be the resistance at 100°C?
Q. A wire has a resistance of 10 Ω at 20°C. If the temperature coefficient of resistivity is 0.004/°C, what will be its resistance at 100°C?
Q. A wire has a resistance of 12 Ω and is made of a material with a resistivity of 3 x 10^-6 Ω·m. If the length of the wire is 4 m, what is its cross-sectional area?
Q. A wire has a resistance of 12 Ω. If it is stretched to double its length, what will be the new resistance assuming uniform cross-section?
Q. A wire has a resistance of 5 Ω at 20°C. If the temperature coefficient of resistivity is 0.004/°C, what will be its resistance at 100°C?
Q. A wire made of material A has a resistivity of 1.5 x 10^-8 Ω·m, while material B has a resistivity of 3.0 x 10^-8 Ω·m. If both wires have the same dimensions, which wire will have a higher resistance?
Q. A wire made of material A has twice the length and half the cross-sectional area of a wire made of material B. If the resistivity of A is ρ, what is the resistance of wire A in terms of the resistance of wire B?
Q. A wire of length 10 m and cross-sectional area 2 mm² has a resistance of 3 Ω. What is the resistivity of the material?
Q. If a wire's length is doubled while keeping its cross-sectional area constant, how does its resistance change?
Q. If the cross-sectional area of a wire is doubled, how does its resistance change?
Q. If the cross-sectional area of a wire is doubled, what happens to its resistance?
Q. If the length of a wire is doubled while keeping the cross-sectional area constant, how does its resistance change?
Q. If the resistivity of a material is 1.5 x 10^-8 Ω·m, what is the resistance of a 3 m long wire with a cross-sectional area of 0.5 mm²?
Q. If the resistivity of a material is 2 x 10^-8 Ω·m and the wire has a length of 3 m and a cross-sectional area of 0.5 mm², what is the resistance?
Q. If the resistivity of a material is doubled, what happens to the resistance of a wire of constant length and cross-sectional area?
Q. If the resistivity of a material is doubled, what happens to the resistance of a wire of fixed length and cross-sectional area?
Q. If the resistivity of a material is halved, what happens to the resistance of a wire of fixed length and cross-sectional area?
Q. If the resistivity of a material is halved, what happens to the resistance of a uniform wire of that material?
Q. If the resistivity of a material is halved, what will happen to the resistance of a wire of fixed length and cross-sectional area?
Q. If the resistivity of a superconductor is zero, what can be said about its resistance?
Q. If the resistivity of copper is 1.68 x 10^-8 Ω·m, what is the resistance of a copper wire of length 100 m and diameter 1 mm?
Q. If the temperature of a conductor increases, what happens to its resistivity?
Q. If the temperature of a metallic conductor increases, what happens to its resistivity?
Q. If two resistors of resistivity 5 x 10^-6 Ω·m are connected in series, what is the total resistivity?
Q. If two resistors of resistivity 5 Ω·m and 10 Ω·m are connected in series, what is the total resistance?
