A thin-film nichrome resistor in the form of a rectangle of dimensions 1mm x 5mm is deposited on to a glass substrate. Estimate the thickness of the film for the resistance measured between electrodes contacting the 1mm edges to be 1.0 k2. The resistivity of 'nichrome' may be taken to be 1.07 x10° -m. Calculate the surface resistivity of the nichrome film.
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- Don't use chat gpt It Chatgpt means downvote forShown below is a copper wire with the following characteristics: Diameter: 1.45 mm.00145m 1.45 × 10-8 m Number density of electrons: 8.47 x 1028 electrons/m³. Conductivity: 5.96 x 107 S/m a. Calculate the drift velocity (magnitude and direction) of the electrons in the wire when a current of 5.00 A is running through it. b. What direction is the current moving? c. Remembering that current density is a vector, calculate the magnitude and direction of the current density of this wire. d. Calculate the resistivity of the wire. e. Calculate the resistance of this wire if it were 10.0 m in length.A potential difference of 12 V is found to produce a current of 0.40 A in a 3.2 m length of wire with a uniform diameter of 0.80 cm. a) What is the value of the resistivity of the wire, and b) the resistance of the wire?
- Flying Circus of Physics Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a legend – he was neither stupid nor suicidal. Suppose a kite string of radius 2.16 mm extends directly upward by 0.801 km and is coated with a 0.508 mm layer of water having resistivity 182 Q-m. If the potential difference between the two ends of the string is 192 MV, what is the current through the water layer? The danger is not this current but the chance that the string draws a lightning strike, which can have a current as large as 500 000 A (way beyond just being lethal). Number i UnitsA 24 m length sample of an unknown metal wire is connected to a known ?= 0.56 Ω resistor and a ?= 24 V battery as shown. The unknown metal wire's cross-sectional radius is 0.0011 m. The voltage across the known resistor is measured to be 9.9 V. What is the wire sample's conductivity (in 1Ω⋅m)?A 54.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 10 m, and the density is 7.30 g/cm. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.50 (a) What length of wire is required? m (b) What must be the diameter of the wire? mm
- If the resistivity of copper is less than that of gold at room temperature, which of the following statements must be true? a) Gold has a higher resistance than copper. b) The sample of gold is thinner than a sample of copper. c) There is more current flowing in the gold than in the copper. d) Electrons in gold are more likely to be scattered than electrons in copper at room temperature when they are accelerated by the same electric field.2) Resistivity is a property of a particular material and can be used to calculate the resistance of a sample. a) Provide an equation for calculating the resistivity of a material. b) Calculate the resistance of 50m roll of copper wire which has a cross sectional area of 5mm^2 if the resistivity of copper is 1.72 x 10^-8 ohm metres.A 46.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 13 x 10-8 - m, and the density is 7.51 g/cm³. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 2. (a) What length of wire is required? m (b) What must be the diameter of the wire? mm Submit Answer
- A rod of length 2.3 m, with a rectangular cross section (1.5mm x 3.0 mm) is made ofa material with a resistivity of 6.1 × 10^-8 Ohm. A potential difference of 5.0 V isplaces across the ends of the rod.a. Draw a clear physics diagram of the problem.b. At what initial rate is heat generated in the rod?c. Will the rate from part (b) increase, decrease, or remain constantover time, as the rod remains connected to the 2.5 V potential difference?Explain brieflyPlease help because I don't know what I did wrong...final units is correct but the my value is wrong.A new material is found to be superconducting below 77 K. How much resistance will a 75 mm long sample of this material have if it is at a temperature of 69.3 K while connected to a 6.4 V AC-power supply? R = How much thermal energy will it generate?Thermal energy generated =