A wire has a resistance of 17.5 ohms. If it’s length is 560 m, how much length must be cut off from the wire in order to reduce its resistance by 5 ohms
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Q: If 1.8 miles of 24-gauge copper wire has a resistance of 0.18 kΩ and the resistivity of copper is…
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Q: A copper wire has a resistance of 0.500 Ω at 20.0ºC , and an iron wire has a resistance of 0.525 Ω…
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- An ammeter whose internal resistance is 57 Ω reads 4.75 mA when connected in a circuit containing a battery and two resistors in series whose values are 800 Ω and 470 Ω. What is the actual current when the ammeter is absent?The wire segment shown below is made of copper with a length of 300.0 m, across sectional area of 4.1 x 10-6 m2 and a resistivity of 3.4 x 10‑8 Ohm-m. What is the resistance of this wire segment?A resistor of 9 ohms is carrying a current of 4 amperes. What is the voltage that would be measured between one side of the resistor and the other? Give your answer in volts as a number without units or other symbols.
- If 1.85 miles of 24-gauge copper wire has a resistance of 1.47 kΩ and the resistivity of copper is 1.7 × 10-8Ω⋅ m, what is the diameter of the wire in meters? (1 mile = 1609 m)How many joules of energy are necessary to run a washing machine for 30 minutes if it is hooked up to a 220-V line and has a resistance of 10 ohms? Answer is E= 17.42 x107 joules (how)When a light bulb is connected to a 8.5 V battery, a current of 0.34 A passes through the light bulb. What is the resistance (in Ω) of the filament [round your final answer to zero 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.A 50 v battery with an internal resistance of 5 ohms has a terminal voltage of 45 v when attached to a resistor. How many ohms is the resistor?A wire that has a resistance of 5.0 ohms is passed through an extruder so as to make it into a new wire three times as long as the original. What is the new resistance?
- You have a simple circuit consisting of a battery and a lightbulb (you can imagine that this circuit is contained within a flashlight). If the total potential difference provided by the batteries in this circuit is 6V, and if you measure the current to be 90.41mA, what is the resistance of the light bulb (created by the thin wire which composes the filament) in units of Ohms?A wire with a temperature coefficient of resistance (-0.0060/C) has a resistance of 5.64 at 20° and a second wire with a temperature coefficient of resistance (0.0064/C) has a resistance of 5.25 at 20°. At what temperature will the two wires have the same resistance?.When a light bulb is connected to a 6 V battery, a current of 0.32 A passes through the light bulb. What is the resistance (in Ω) of the filament [round your final answer to zero decimal places]?