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(a) A 35.3-m length of copper wire at 20.0°C has a radius of 0.31 mm. If...
a.) A 33.9-m length of copper wire at 20.0°C has a radius of 0.31 mm. If...
a.) A 33.9-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.00 V is applied across the length of the wire, determine the current in the wire. b.) If the wire is heated to 40.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
(a) A 34.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If...
(a) A 34.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Resistivity (Ω · m) Temperature Coefficient of Resistivity [(°C)−1] Silver 1.59 ✕ 10−8 3.8 ✕ 10−3 Copper 1.7 ✕ 10−8 3.9 ✕ 10−3 Gold 2.44...
3. a) A tungsten wire of length 20.0 m, initially at temperature 20.0°C, has a diameter...
3. a) A tungsten wire of length 20.0 m, initially at temperature 20.0°C, has a diameter of 2.00 mm. The potential difference across the whole wire is 180 V. Determine the current intensity in the wire b) Due to ohmic losses, the wire is heated up to 60.0°C, but the potential difference through the wire remains the same. Find the resulting current intensity. Note: po = 5,6x10 82 m, a=4.5x10(°C)
The temperature coefficient for copper is 0.0039 (◦C)^−1 . If the wire is heated to 36◦C...
The temperature coefficient for copper is 0.0039 (◦C)^−1 . If the wire is heated to 36◦C while the 6 V potential difference is maintained, what is the resulting current in the wire? Answer in units of A.
A tungsten wire has a radius of 0.061 mm and is heated from 20.0 to 1335...
A tungsten wire has a radius of 0.061 mm and is heated from 20.0 to 1335 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 240 V is applied across the ends of the hot wire, a current of 1.2 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
A tungsten wire has a radius of 0.076 mm and is heated from 20.0 to 1305...
A tungsten wire has a radius of 0.076 mm and is heated from 20.0 to 1305 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 120 V is applied across the ends of the hot wire, a current of 1.9 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
A tungsten wire has a radius of 0.081 mm and is heated from 20.0 to 1315...
A tungsten wire has a radius of 0.081 mm and is heated from 20.0 to 1315 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 110 V is applied across the ends of the hot wire, a current of 2.0 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
A tungsten wire has a radius of 0.072 mm and is heated from 20.0 to 1410...
A tungsten wire has a radius of 0.072 mm and is heated from 20.0 to 1410 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 240 V is applied across the ends of the hot wire, a current of 1.9 A is produced. How long is the wire? Neglect any effects due to the thermal expansion of the wire. _________________m
A potential difference of 100 V is maintained across the two ends of a nickel wire of radius 2 mm and length 10 m.
A potential difference of 100 V is maintained across the two ends of a nickel wire of radius 2 mm and length 10 m. Calculate (a) the electric field intensity, (b) the current density, and (c) the electric current through the wire
A tungsten wire has a radius of 0.087 mm and is heated from 20.0 to 1334...
A tungsten wire has a radius of 0.087 mm and is heated from 20.0 to 1334 oC. The temperature coefficient of resistivity is α = 4.5 x 10-3 (Co)-1. When 150 V is applied across the ends of the hot wire, a current of 1.3 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. help!!
3. a) A tungsten wire of length 20.0 m, initially at temperature 20.0°C, has a diameter of 2.00 mm. The potential difference across the whole wire is 180 V. Determine the current intensity in the wire b) Due to ohmic losses, the wire is heated up to 60.0°C, but the potential difference through the wire remains the same. Find the resulting current intensity. Note: po = 5,6x10 82 m, a=4.5x10(°C)
A potential difference of 100 V is maintained across the two ends of a nickel wire of radius 2 mm and length 10 m. Calculate (a) the electric field intensity, (b) the current density, and (c) the electric current through the wire
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