9. A zinc wire sample at 20C is found to have resistivity p=5.9 X10% ohm-m. (a)...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
9. A zinc wire sample at 20°C is found to have resistivity p=5.9 X10% ohm-m. (a) Find the conductivityo. (b) An applied electric voltage drives a steady current through the zinc sample. The current density at a point in the sample is found to be J = 4 X 10 A/m². Calculate the electric field at that point. (e) The wire sample has cross- section area 4mm² = 4X10m² and length 1cm= 102m. Find the resistance of the sample. 10. A 60 Hz alternating voltage of 110V effective value is applied to a series circuit having an inductance L of 1.00H, a capacitance C of 2.00μF, and a resistance R of 400 Ohms. Calculate the: (a) Inductive reactance (b) Capacitive reactance (c) Total impedance (d) Effective current in the circuit 11. A ring of wire with radius R is centered at the origin and lies on the x-y plane, so that it's axis coincides with the z-axis. Current I flows around this circular wire loop. (a) Using the Biot-Savart law, calculate the magnetic field at the center of the loop, i.e., at the origin. (b) Using the Biot-Savart law, calculate the magnetic field at the point (0, 0, zo) on the z-axis (a point on the axis of the loop). R 12. A very long cylinder with Radius R has charge distributed throughout its volume and on its surface. The volume charge density depending on the distances from the axis of the cylinder as p = Powhere po is just a constant. The charge on the surface is uniform- the surface charge density oo is constant (a) Use Gauss's Law to find the electric field (s<R) and outside (s>R) the cylinder. Note: be clear about your choice of Gaussian surface, the flux through these surfaces, and how much charge they contain (b) Show tht the electric field has the correct discontinuity at the surface of the cylinder (s-R) 13. Find the total electric flux through a closed cylinder containing a line charge along its axis with linear charge density A = Ao(1) if the cylinder and the line charge extend from x=0 to x h. 14. A solid sphere of radius R carries a total charge Q, uniformly distributed in the volume of the sphere. (a) What is the charge density? (b) Empioy Gauss's dielectric flux theorem to calculate the electric field inside the sphere, at distance r < R from the center of the sphere. Provide a drawing showing relevant surfaces and distances. (c) What is the electric field outside the sphere, at distance r> R from the center of the sphere? (Showing a derivation is not necessary.) (d) Using your expressions for the electric field, find the electric potential V (r), outside the sphere and inside the sphere. 15. A ball of known charge q and unknown mass m, initially at rest, falls freely from a height h in a uniform electric field E that is directed vertically downward. The ball hits the ground at a speed v-2vgh. Find m in terms of E, q and g. Ч 9. A zinc wire sample at 20°C is found to have resistivity p=5.9 X10% ohm-m. (a) Find the conductivityo. (b) An applied electric voltage drives a steady current through the zinc sample. The current density at a point in the sample is found to be J = 4 X 10 A/m². Calculate the electric field at that point. (e) The wire sample has cross- section area 4mm² = 4X10m² and length 1cm= 102m. Find the resistance of the sample. 10. A 60 Hz alternating voltage of 110V effective value is applied to a series circuit having an inductance L of 1.00H, a capacitance C of 2.00μF, and a resistance R of 400 Ohms. Calculate the: (a) Inductive reactance (b) Capacitive reactance (c) Total impedance (d) Effective current in the circuit 11. A ring of wire with radius R is centered at the origin and lies on the x-y plane, so that it's axis coincides with the z-axis. Current I flows around this circular wire loop. (a) Using the Biot-Savart law, calculate the magnetic field at the center of the loop, i.e., at the origin. (b) Using the Biot-Savart law, calculate the magnetic field at the point (0, 0, zo) on the z-axis (a point on the axis of the loop). R 12. A very long cylinder with Radius R has charge distributed throughout its volume and on its surface. The volume charge density depending on the distances from the axis of the cylinder as p = Powhere po is just a constant. The charge on the surface is uniform- the surface charge density oo is constant (a) Use Gauss's Law to find the electric field (s<R) and outside (s>R) the cylinder. Note: be clear about your choice of Gaussian surface, the flux through these surfaces, and how much charge they contain (b) Show tht the electric field has the correct discontinuity at the surface of the cylinder (s-R) 13. Find the total electric flux through a closed cylinder containing a line charge along its axis with linear charge density A = Ao(1) if the cylinder and the line charge extend from x=0 to x h. 14. A solid sphere of radius R carries a total charge Q, uniformly distributed in the volume of the sphere. (a) What is the charge density? (b) Empioy Gauss's dielectric flux theorem to calculate the electric field inside the sphere, at distance r < R from the center of the sphere. Provide a drawing showing relevant surfaces and distances. (c) What is the electric field outside the sphere, at distance r> R from the center of the sphere? (Showing a derivation is not necessary.) (d) Using your expressions for the electric field, find the electric potential V (r), outside the sphere and inside the sphere. 15. A ball of known charge q and unknown mass m, initially at rest, falls freely from a height h in a uniform electric field E that is directed vertically downward. The ball hits the ground at a speed v-2vgh. Find m in terms of E, q and g. Ч
Expert Answer:
Answer rating: 100% (QA)
A Conductivity 016949 108 Ohm inverse metre inverse B Elec... View the full answer
Posted Date:
Students also viewed these physics questions
-
The reaction A B + C is found to be zero order. If it takes 4.3 102 seconds for an initial concentration of A to go from 0.50 M to 0.25 M, what is the rate constant for the reaction?
-
A band-limited voltage signal is found to have the complex Fourier coefficients presented in the table below. Calculate the average power that the signal would supply a 4- Ω resistor. 0...
-
A diatomic molecule is found to have an activation energy of 1.4eV. When the molecule is disassociated, 1.6eV of energy is released. Draw a potential energy curve for this molecule.
-
Two pulses A and B are moving in opposite directions along a taut string with a speed of 2.00 cm/s. The amplitude of A is twice the amplitude of B. The pulses are shown in Figure P18.2 at t = 0....
-
Differentiate between the role of engineering and the research and development department.
-
Scarola purchased an automobile for value and without knowledge that it was stolen. After he insured the car with Insurance Company of North America (INA) the car was stolen once again. When INA...
-
Net sales, net income, and total asset figures for Janice Controls, Inc., for five consecutive years are given below (Janice manufactures pollution controls): Required a. Calculate trend percentages,...
-
Go to Marriotts website (www.marriott.com) and peruse the different types of lodging brands offered. Select any three and based on the discussion of differentiation in the chapter, identify the...
-
Analyse your organisation's total supply network. Explain the different up-and-down stream-tiers within the network and motivate your discussion with examples from your industry
-
Dog Up! Franks is looking at a new sausage system with an installed cost of $385,000. This cost will be depreciated straight-line to zero over the projects five-year life, at the end of which the...
-
Sarah wants to buy a $600000 one-bedroom apartment in Toronto. She believes that she can make a down payment of $160000. The terms of the mortgage are a 5.0% per year compounded monthly for a fixed 3...
-
Can someone help me those 2 questions using C++ only 1. generate a histogram of 20,000 randomly generated integer numbers according to a normal distribution with a user-specified mean and standard...
-
In 2000 only 17% of the assets invested in hedge funds came via funds of funds, by 2007 this proportion had grown to over 40%, however by 2016 the proportion had again reduced significantly to 20%....
-
3 Question 40 (2.5 points) Listen Exactly 35 years from today, Indira wants to have $1,000,000 in her retirement account. If Indira's retirement account pays interest of 13.6% per year, but with...
-
Here is the grammar for our language. Literal values in the grammar are denoted within single quotes. For example, 'LET' indicates that the uppercase characters LET must be observed at that point...
-
4. The position of a point on a line is given by the equation s(t) = t - 6t + 9t - 4, where s is measured in metres and t in seconds. (2 marks each) a. What is the velocity of the point after 2...
-
F. Do whatever other configurations are usually needed for Stateful configuration to work
-
CdF2 (s) Cd+ (aq) + 2 F- (aq) 1. A saturated solution of CdF2 is prepared. The equilibrium in the solution is represented above. In the solution [Cd+] eq = 0.0585 M and [F-] eq = 0.117 M. a....
-
Stanford Corporation began the year with 150,000 shares of common stock outstanding. On March 1, an additional 10,000 shares of common stock were issued. On August 1, another 16,000 shares of common...
-
The following summarized data relate to Robert Corporation's current operations: Required Prepare a multiple-step income statement for Robert Corporation for the year. Include earnings per share...
-
Net sales, net income, and total asset figures for Janice Controls, Inc., for five consecutive years are given below (Janice manufactures pollution controls): Required a. Calculate trend percentages,...
Study smarter with the SolutionInn App