A potential difference of 3.28 nV is set up across a 2.34 cm length of copper wire that has a radius of 2.32 mm. How much charge drifts through a cross section in 3.27 ms? Assume that the resistivity of copper is 1.69 × 10-8 Ω·m.
A potential difference of 3.28 nV is set up across a 2.34 cm length of copper...
1a) An insulating sphere of radius 2.0 m contains +50 μC of electric charge uniformly distributed throughout the volume of the sphere. i) What is the electric field 1.5 m away from the center of the sphere? ii) What is the volume charge density? iii) What is the electric field 3.0 m away from the center of the sphere? 1b) A potential difference of 6.00 nV is set up across a 5.00 cm length of copper wire that has a...
A heating element is made by maintaining a potential difference of 66.0 V across the length of a Nichrome wire that has a 3.15 × 10–6 m2 cross section. Nichrome has a resistivity of 5.00 × 10–7 Ω·m. (a) If the element dissipates 4910 W, what is its length? (b) If 113 V is used to obtain the same dissipation rate, what should the length be?
The figure gives the electric potential V(x) along a copper wire
carrying uniform current, from a point of higher potential Vs =
13.0 μV at x = 0 to a point of zero potential at xs = 3.20 m. The
wire has a radius of 1.70 mm, and copper has a resistivity of 1.69
× 10-8 Ω·m. What is the current in the wire?
V (V) 0 Xs x (m)
You have a piece of copper wire of length L = 15.0 cm and radius R = 0.5 mm. Given that the resistivity of copper is 1.68 X 10^-8 Ohm*m, what is: a. The resistance of your piece of wire? b. If a current of i = 0.5 mA is set up in the wire, what is the magnitude of the current density of the wire? c. With a current of i = 0.5 mA, what is the change in...
Physics with Cal 2
A copper wire has radius of 0.2 cm and length of 400n m, what is the resistance of this copper wire? When a 200-V potential difference is applied over the wire, what is the current through the wire and what is the electric power? If the current is uniformly distributed, what is the current density? If the drift speed is 10 m/s, what is the number density of electrons in the wire? (Given copper's resistivity as...
An aluminum bar 3.68 m long has a rectangular cross section 1.01 cm by 5.17 cm . a. What is it's resistance? (I got 1.987x10^-4 but the program says this is wrong) b. What is the length of a copper wire 1.50 mm in diameter having the same resistance? (I got 0.02041 but it also was wrong) A 14.0 gauge copper wire of diameter 1.628 mm carries a current of 11.0 mA. What is the potential difference across a 2.25...
A copper wire has cross section area 0.002 m' and length of 400 m, what is the resistance of this copper wire? When a 200-V potential difference is applied over the wire, what is the current through the wire and what is the electric power? If the current is uniformly distributed, what is the current density? If the drift speed is 10 m/s, what is the number density of electrons in the wire? (Given copper's resistivity as 2x10 s2 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
4a. The resistance of a 5.0 meter length of 14-gauge copper wire is 8.1 x 10 ohms/meter. How much energy loss occurs per second in the wire when a current of 20.0 amps is applied? Assume that the cross-sectional area is 2.1 mm', what is the shortest time in which the applied current could heat the wire by 15.0°C? You may assume that the density of copper is 8.92 x 10 kg/m and its molar heat capacity is 6.0 calories/mole/K....
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?