Aluminium is used to make long-distance power lines because it has a low resistivity and is relatively cheap. The resistivity of aluminium is 2.82 10–8 Ω m. What is the resistance (in Ω) per kilometre of aluminium line having a cross sectional area of 1.5 cm2 ?
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Aluminium is used to make long-distance power lines because it has a low resistivity and is relatively cheap. The resistivity of aluminium is 2.82 10–8 Ω m. What is the resistance (in Ω) per kilometre of aluminium line having a cross sectional area of 1.5 cm2 ?
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- 1. What are Hooke's law and simple harmonic motion, and how are they related? 2. What is the physical significance of the spring constant of a spring? What does it tell you? 3. How is the spring constant determined in this experiment? 4. In the equation of motion for simple harmonic motion (Eq. TI 16.2), what physically determines A and T? 5. How is the period of a mass oscillating on a spring related to the spring constant? (Express your answer mathematically and verbally.)A wire at a temperature of 60.7°C has a resistance of 35.6 Ω. At 164°C the resistance is 94.7 Ω. Find the temperature coefficient of resistivity of the alloy the wire is made of.Three resistors with resistances R1 = 0.66 ohm, R2 = 4.56 ohm, and R3 = 8.73 ohm are is parallel circuit with a 16.1 volt battery. What is the equivalent resistance (ohm) of the circuit?
- How long is a tungsten wire if it has a diameter of 0.195 x 10 m and a resistance of 3.33 k2? The resistivity of tungsten -3 is 5.62 x 10-8 Q-m. length of the wire: m1. Conductor Resistance: A copper wire with a length of 5 meters and a cross-sectional area of 3 × 10-6 m² has a resistivity of 1.68 × 10-8 Nm. Calculate the resistance of the copper wire. 2. Resistor Temperature Dependence: The resistance of a tungsten filament in an incandescent light bulb is 50 ohms at room temperature. If the temperature of the filament increases, and its resistance becomes 75 ohms, calculate the percentage increase in resistance. 3. Material Comparison: Two wires, one made of aluminum and the other of copper, have the same length and cross-sectional area. If the resistivity of aluminum is 2.82 × 10−8 N · m and the resistivity of copper is 1.68 × 10-8 N · m, compare the resistance of the two wires.What is the resistivity of a wire of 1.4 mm diameter, 2.6 m length, and 47 mΩ resistance.
- Two resistors are connected in series with an 34.76 volt battery. The resistors have values of R1 = 1.84 ohms and R2 = 9.71 ohms. What is the current (in amps) in this circuit? Round your answer to two decimal places.How long is a tungsten wire if it has a diameter of 0.109 x 10^-3 m and a resistasnce of 3.49 k-ohms? the resistivity of tungsten is 5.62 x 10^-8 ohms*meters.Aluminium is used to make long-distance power lines because it has a low resistivity and is relatively cheap. The resistivity of aluminium is 2.82 10-8 0 m. What is the resistance (in 0) per kilometre of aluminium line having a cross sectional area of 1,5 cm2 ?
- Determine the length (in mm) of a gold conductor that has a resistance of 0.014 Ω and a cross-sectional area of 2.7 x 10-9 m2. The resistivity of gold is 2.2 x 10-8 Ω-m [round your final answer to one decimal place].A 850 ft. conductor with a diameter of 0.08 inches has a resistance of 79.7 Ω @ 20°C. What material is the conductor made of?A wire is made of a material with a resis- tivity of 2.97138 x 10-8 2 · m. It has length 2.16443 m and diameter 0.20515 mm. What is the resistance of the wire? Answer in units of N.