A 580-mm long tungsten wire, with a 0.046-mm-diameter circular cross section, is wrapped around in the...

A 580-mm long tungsten wire, with a 0.046-mm-diameter circular cross section, is wrapped around in the shape of a coil and used as a filament in an incandescent light bulb. When the light bulb is connected to a battery, a current of 0.526 A is measured through the filament. (Note: tungsten has a resistivity of 4.9 × 10-8 ? • m.) How many electrons pass through this filament in 5 seconds?

How many electrons pass through this filament in 5 seconds? 4.22 × 10-19 2.63 3.29 × 1018 1.64 × 1019

What is the resistance of this filament? What is the resistance of this filament? 4.28 ? 58.5 m? 17.1 ? 9.0 ?

What is the voltage of the battery that would produce this current in the filament? 31 mV 9.0 V 2.6 × 10-8 V 32 V

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

A wire made from tungsten is 4.5 m long and 0.45 mm in diameter. What is...

A wire made from tungsten is 4.5 m long and 0.45 mm in diameter. What is its resistance at 1500°C?

Consider an electron beam of uniform circular cross-section with a diameter of 1 mm. The electrons...

Consider an electron beam of uniform circular cross-section with a diameter of 1 mm. The electrons are accelerated from the cathode to the anode, which are separated by 1 m. The electrons are generated at the cathode and therefore have negligible velocity at this position. The electrons accelerate at a rate of 108 ?/?2 between the cathode and anode. The current density at the anode is 104 ?/?2 . Find the current density as a function of position between the...

An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with...

An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with a diameter of 46.0 μm. At 20.0∘C tungsten has a resistivity of 5.25×10−8Ω⋅m. Its temperature coefficient of resistivity is 0.0045 (C∘)−1, and this remains accurate even at high temperatures. The temperature of the filament increases linearly with current, from 20∘C when no current flows to 2520∘C at 1.00 A of current. What is the resistance of the light bulb at 20∘C? What is the...

A 2.8 mm -diameter copper wire carries a 31 Acurrent (uniform across its cross section). A)...

A 2.8 mm -diameter copper wire carries a 31 Acurrent (uniform across its cross section). A) Determine the magnetic field at the surface of the wire. B) Determine the magnetic field inside the wire, 0.50 mm below the surface. C) Determine the magnetic field outside the wire 2.5 mm from the surface.

If 47.0 cm of copper wire (diameter = 1.00 mm) is formed into a circular loop...

If 47.0 cm of copper wire (diameter = 1.00 mm) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at a constant rate of 10.5mT/s, at what rate is thermal energy generated in the loop? _______________ W

An accelerator produces a beam of protons with a circular cross section that is 1.6 mm...

An accelerator produces a beam of protons with a circular cross section that is 1.6 mm in diameter and has a current of 1 mA. The current density is uniformly distributed throughout the beam. The kinetic energy of each proton is 20 MeV. The beam strikes a metal target and is absorbed by the target. 1) What is the number density of the protons in the beam? 2) How many protons strike the target in each minute? 3) What is...

The figure shows wire 1 in cross section; the wire is long and straight, carries a...

The figure shows wire 1 in cross section; the wire is long and straight, carries a current of 4.20 mA out of the page, and is at distance d1 = 2.61 cm from a surface. Wire 2, which is parallel to wire 1 and also long, is at horizontal distance d2 = 5.22 cm from wire 1 and carries a current of 7.06 mA into the page. What is the x component of the magnetic force per unit length on...

A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop...

A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop with a radius of 24.0 cm. A magnetic field perpendicular to the plane of the loop increases from zero to 18.0 mT in 0.20 s. Find the average electrical power dissipated in the process.

Consider cylindrical shape rod of silicon with circular cross-section (resistivity of 3345 , the diameter of...

Consider cylindrical shape rod of silicon with circular cross-section (resistivity of 3345 , the diameter of 2.53 cm and length of 32.7 cm). Consider a voltage of 1.25*103 V is applied. The temperature coefficient of silicon is -0.005 0C-1 (negative because Silicon is a semiconductor). (a) Find the resistance of this rod at room temperature? (2 points) (b) Find the electric field inside the silicon rod? (3 points) (c) Find the energy dissipations in 3 min? (2 points) (d) If...

a .25 mm diameter wire .2 m long is to be held at 1035 deg C....

a .25 mm diameter wire .2 m long is to be held at 1035 deg C. The wires surface is black. how much electrical power is required to maintain it's temp? The surrounding air and room are both at 20 deg C. The room is also assumed to be black . Find : Raleigh number, nusselt number, HTC and power required to maintain temperature.

Subjects