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How many insulated staples are needed for the bell wire if it is stapled every 24 inches
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- The resistance of a wire at 45 °C is 20 ohms. If the temperature coefficient of resistance at 0°C is 0.004115/°C, determine the resistance of the conductor at 100°C. Please answer with a complete solution.A coil of 350 turns is wound uniformly on an annealed steel core with a mean circumference of 0.15 m and a cross sectional area of 1.5x104 m2. The resistance of the coil is 15 Q and the voltage developed across the coil is 12 V. The relative permeability of an annealed steel is 850 and the permeability of free space is given as 4TT x 10-7 H/m. Calculate the following: Permeability of the medium; (ii) Magnetizing force; (ii) Reluctance of the coil.The resistance of a wire increases by 22 percent when the temperature of the wire is increased from 10 degrees C to 105 degrees C. What is the temperature coefficent (a) of the wire's material?
- Let's consider two vectors, A = (-7, 10), B = (-5, -8), and C = (-1, 6) as shown below. A C B What is the magnitude of A+ B+ C? Answer What is the direction (8) of A+B+C relative to +x-axis? a-839 b. 20 C-85 3 d. 148°(a) A physicist is constructing a solenoid. She has a roll of insulated copper wire and a power supply. She winds a single layer of the wire on a tube with a diameter of dolencid = 10.0 cm. The resulting solenoid is e = 85.0 cm long, and the wire has a diameter of dire = 0.100 cm. Assume the insulation is very thin, and adjacent turns of the wire are in contact. What power (in W) must be delivered to the solenoid if it is to produce a field of 9.20 mT at its center? (The resistivity of copper is 1.70 x 10-8 0. m.) w What If? Assume the maximum current the copper wire can safely carry is 22.0 A. (b) What is the maximum magnetic field (in T) in the solenoid? (Enter the magnitude.) (c) What is the maximum power (in W) delivered to the solenoid?Circuit Problem: Express each labelled voltage and current (e.g., vx, ix) in terms of the resistances and source currents and voltages (e.g., R0).