A copper wire with 4mm diameter, 2.0m length carries 6.0 ampere of current. Free electron density of copper is 8.5x10^28(1/m^3), resistivity of copper is ρ=1.6x10^-6 Ωcm. Find followings, A- Current density, B- Electrical field, C- Free electron drift velocity,
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A copper wire with 4mm diameter, 2.0m length carries 6.0 ampere of current. Free electron density of copper is 8.5x10^28(1/m^3), resistivity of copper is ρ=1.6x10^-6 Ωcm.
Find followings,
A- Current density,
B- Electrical field,
C- Free electron drift velocity,
D- Wasted energy as heat.
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- A wire is 1.3 m long and 0.97 mm2 in cross-sectional area. It carries a current of 5.0 A when a 1.6 V potential difference is applied between its ends. Calculate the conductivity o of the material of which this wire is made. Number Units (요·m)^-1 ▼ Use correct number of significant digits; the tolerance is +/-1 in the 2nd significant digitThere is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a cross-sectional area of 1 mm2. The resistivity of graphite is 7.5E-6 Ω-m. Let's trace some intermediate quantities before finding the electric field inside the rod. Resistance is .75 ohms and Current is 1.3 Amps Electric field inside the rod is Group of answer choices 100 V/m 10 V/m 0.1 V/m 1 V/mA 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
- When 134 V is applied across a wire that is 12 m long and has a 0.40 mm radius, the magnitude of the current density is 2.0 × 104 A/m². Find the resistivity of the wire. Number 5.444E-4 Units (Q.m)^-1 ✓Part A:If there is an annealed copper wire with resistivity 0.172 nano ohm meters and a diameter of 2mm placed in an electric field of 16,000N/C, then how much current will go through the wire? Part BIf this wire (the same as in part A) has an electron density of 8.5x10^28 m^-3 then what is the drift velocity of the electrons in this wire? The charge of each electron is, as usual, 1.602x10^-19C.A tungsten wire has a radius of 0.068 mm and is heated from 20.0 to 1326 oC. The temperature coefficient of resistivity is α = 4.5 × 10-3 (Co)-1. When 110 V is applied across the ends of the hot wire, a current of 2.1 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
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