A coil of Nichrome wire is 29.0 m long. The wire has a diameter of 0.460 mm and is at 20.0°C. (a) If it ca...

Question

Question

A coil of Nichrome wire is 29.0 m long. The wire has a diameter of 0.460 mm and is at 20.0°C.

(a) If it carries a current of 0.460 A, what is the magnitude of the electric field in the wire?

(b) If it carries a current of 0.460 A, what is the power delivered to it?

(c) If the temperature is increased to 360ºC and the potential difference across the wire remains constant, what is the power delivered?

science physics

Answer 1

Answer #1

Resistance, R = pL/A

R = (1.1 x 10^-6 x 29)/pi (0.23 x 10^-3)^2 = 191.95 ohm

Voltage, V = 0.46 x 191.95 = 88.3 V

A)

Electric field, E = V/d = 88.3/29 = 3.04 V/m

B)

Power, P = I^2R = 0.46^2 x 191.95 = 40.62 W

C)

R = 191.95 (1 - 0.4 x 10^-3(360 - 20)) = 165.84 ohm

Power, P = 0.46^2 x 165.84 = 35.09 W

Comment in case any doubt please rate my answer....

Answer 2

Similar Homework Help Questions

15. A spool of aluminum wire 290 m long and with a diameter of 0.440 mm...

15. A spool of aluminum wire 290 m long and with a diameter of 0.440 mm is at 20.0°C. For aluminum, the resistivity is 2.82 ✕ 10−8 Ω · m and the temperature coefficient of resistivity is 3.90 ✕ 10−3 (°C)−1. (a) What is the magnitude of the electric field (in V/m) in the wire if it carries a current of 0.600 A? V/m (b) What is the electric power (in W) delivered to the spool while it carries a...
A coil of Nichrome wire is 22.0 m long. The wire has a diameter of 0.410...

A coil of Nichrome wire is 22.0 m long. The wire has a diameter of 0.410 mm and is at 20.0°C. Posting this question for the third time. how CAN I report this issue ?
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)

When a heating a coil made of 34.0 m of 1.0 mm diameter Nichrome wire is...

When a heating a coil made of 34.0 m of 1.0 mm diameter Nichrome wire is in use, its temperature increases from 20°C to 140°C. The heating coil in connected to a 9V battery. What will happen to the current in the heating coil as the temperature increases? A) The current will increase B) The current will decrease C) The current will remain the same D) The current will increase and then decrease
A 6.0V potential difference is applied between the ends of a 0.80-mm-diameter, 40-cm-long nichrome wire.

A6.0V potential difference is applied between the ends of a 0.80-mm-diameter, 40-cm-long nichrome wire. Part A What is the current in the wire?
A 8.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 90-cm-long nichrome wire....

A 8.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 90-cm-long nichrome wire. What is the current in the wire?

A 5.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 85-cm-long nichrome wire....

A 5.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 85-cm-long nichrome wire. What is the current in the wire? resistivity of nichrome is 1.5*10^-6 (I think, if im wrong use something else)
A 2.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 80-cm-long nichrome wire....

A 2.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 80-cm-long nichrome wire. Part A What is the current in the wire? Express your answer using two significant figures.
A wire 3.66 m long and 6.77 mm in diameter has a resistance of 21.7 m?....

A wire 3.66 m long and 6.77 mm in diameter has a resistance of 21.7 m?. A potential difference of 17.5 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made. (a) Number Units (b) Number Units (c) Number Units A wire 3.66 m long and 6.77 mm in diameter has a...

A 29.0 cm diameter coil consists of 23 turns of cylindrical copper wire 2.00 mm in...

A 29.0 cm diameter coil consists of 23 turns of cylindrical copper wire 2.00 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 7 x 10^-3 T/s. Determine the current in the loop in milli-amps (the resistivity for copper is 1.72 x 10^-8 Ω.m).