1. Particles with a charge of +3e are incident on a target. If the beam of particles carries a current of 111 µA, how many particles strike the target in a period of 30.0 s? 2. What is the fractional change in the resistance of an iron filament when its temperature changes from 21.4°C to 50.4°C (the 2 questions are not related)

Q: The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in diameter is 0.830 ohms at…

A:

Q: The current-density magnitude in a certain circular wire is J= (3.00 x 1010 A/m*)r?, where ris the…

A: Given: Current Density,J3×1010A/m4r2Radius,r=2mm=2×10-3mPotential…

Q: a. If a current of 82.0 mA exists in a metal wire, how many electrons flow past a given cross…

A: (a) The current I is the amount of charge Q that crosses a certain point of the wire in a time :In…

Q: A service station charges a battery using a current of 5.7 A for 7.0 h. What is the total charge in…

A:

Q: A 190-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,210 A.…

A: Length of transmission line (L) = 190 km = 190000 m Diameter of the transmission line (d) = 2 cm…

Q: 1. The current supplied to an air conditioner unit is 4.5 amps. The air conditioner is wired using a…

A:

Q: A current of 5A passes through a wire. The number of electrons crossing a point in the wire in 2…

A: Given : I = 5 A t = 2 minutes = 2 × 60 = 120 seconds

Q: A silver wire with a circular cross-section has a mass of 1.45 g and a resistance of 0.790 Ω. At…

A: Mass (m) = 1.45 g = 0.00145 kg Resistance (R) = 0.79 ohm Temperature (T) = 20o C Resistivity of…

Q: The resistance of a wire that is 105 cm long is 20.5 Q. After the temperature change, its resistance…

A: Information Given:- Length of the wire is l=105 cm Initial resistance of the wire is R0=20.5 Ω…

Q: What is the resistance (in units of N) of a wire made of a material with a resistivity of 3.2 × 10-8…

A:

Q: An aluminum wire having a radius of 7.53 mm and carrying a current of 86.2 mA is connected in a…

A: let the density of the electrons is denoted by n, the charge of electrons is denoted by e, the…

Q: 280 CHAPTER 6. ELECTRONICS .6.17 How many electrons will pass through a cylindrical copper wire of…

A: We know current density J =I/A Where I = current flowing coper wire  A = area of copper wire But…

Q: Conducting Pipe: A pair of students working in a lab decide to use the plumbing to send electrical…

A:

Q: Fill in the blank with the correct answer. Sami suggested replacing the copper wire used in the…

A:

Q: The following results are for five cells in series. The e.m.f. of the five cells together is 6.9 V.…

A: E = 6.9 V  V = 3.3 V R = 2.2 ohm  I = 1.5 A

Q: .A burning lamp is marked 800 kW, 230 kV. (a) How much current flows through the lamp? (b) What is…

A: Note: Asper Bartleby guidelines only one question has to be solved at a time. Upload other parts…

Q: 1. An unknown alloy is subjected to an electric field of 25 V/m, and has a current density of 1.45 ×…

A:

Q: 10. An aluminum wire (resistivity at 20°C of 2.65x10-8 2m, temperature coefficient of 0.00429/°C) is…

A:

Q: What is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 x 10-8…

A: Given: The resistivity is ρ=3.2×10-8 Ωm. The length is L=10.6 m. The diameter is d=0.50 mm. The…

Q: What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when 12 V…

A: Resistance is given by: R = ρ*L/A ρ = resistivity of annealed copper = 1.72*10^-8 ohm-m L = length…

Q: - C are 2.0 x 10-6 n·m and 1.00 wires are joined as shown in the F

A:

Q: 1. Electron guns are used in X-ray tubes. The electrons are accelerated through a relatively large…

A:

Q: block

A: The relation between the heat transfer and the temperature change for a specific material is given…

Q: 3.  Pure water has very few ions (about 1.20 × 1014 ions per cubic centimeter), giving it a high…

A:

Q: A copper wire has a square cross-section of 2.5 mm on a side. The wire is 3.5m long and carries a…

A: Given, side of a square cross section a=2.5mm=2.5×10-3m, Length of wire L=3.5m, Density of free…

Q: _1. If wire has 1.25 x 1016 electrons flowing through its cross-section in one second, what is the…

A: Given that,number of electron flowing per second, N=1.25×1016charge of 1 electron, q= 1.6×10-19…

Q: Current 1. A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains…

A: The current in the wire=The rate of charge flow The drift velocity, vd=IneA I is the current…

Q: Shown below is a copper wire with the following characteristics: Diameter: 1.45 mm.00145m 1.45 ×…

A:

Q: The room temperature resistivity of gold isp= 2.44 x 10-8 N. m.Agold wire that is 0.75 mm in…

A:

Q: A 4.5×10−4 V/m electric field creates a 2.0×1017 electrons/s current in a 1.6-mm-diameter aluminum…

A: Given that      The electric field is(E) =  4.5*10-4V/m                                    I =…

Q: 3. Look up tabulated conductivities (or resistivities) of copper, silver, and aluminum at 20 °C and…

A: The resistance for a given length of a conducting wire is given in terms of its resistivity as…

Q: 2.A current-carrying gold wire has a diameter 0.84 mm. The electric field in the wire is 0.49 V/m.…

A: Given information: Here, d is the gold wire’s diameter, E is the electric field in the wire, l is…

Q: An aluminum wire having a cross-sectional area equal to 4.60 x 106 m? carries a current of 7.50 A.…

A: Given, Area(A)=4.60×10^-6m² Current (I)=7.50A Density=2.7g/cm³ Drift Velocity=?

Q: ws in a wire. The charge ca 12. If there are 6.4 x 1028 e

A: Drift velocity is the average velocity  attained by charged particles, such as electrons, in a…

Q: An iron wire has a resistance of 78.7. m ohm at 20 degrees Celsius. When the wire carries a current,…

A: The temperature coefficient of resistance for iron is 0.0057 C-1 ...

Q: 1. The current supplied to an air conditioner unit is 4.5 amps. The air conditioner is wired using a…

A:

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.