Question

Please help with Part E and Part D

Measuring the properties of a slab of material A slab made of unknown material is connected to a power supply as shown in the figure. There is a uniform magnetic field of 0.8 tesla pointing upward throughout this region (perpendicular to the horizontal slab). Two voltmeters are connected to the slab and read steady voltages as shown. (Remember that a voltmeter reads a positive number if its positive lead is connected to the higher potential location.) The connections across the slab are carefully placed directly across from each other. The distance w = 0.19 m. Assume that there is only one kind of mobile charges in this material, but we dont know whether they are positive or negative -0.00027 V Power supply cm 1.2 cm +0.73 V (a) Determine the (previously unknown) sign of the mobile charges, and state which way these charges move inside the slab. Which of the following are true? O The mobile charges are positive and move into the page O The mobile charges are negative and move into the page O The mobile charges are positive and move out of the page O The mobile charges are negative and move out of the page (b) In the steady state, the current moves straight along the bar, so the net sideways force on a moving charge must be zero. Use this fact to determine the drift speed v of the mobile charges 00422 (c) Knowing the drift speed, determine the mobility u of the mobile charges. (Note that there are two contributions to the electric field in the bar. Think about which one drives the current.) 001098 (m/s)/(volts/m) (d) The current running through the slab was measured to be 0.3 ampere. If each mobile charge is singly charged (Iql-e), how many mobile charges are there in 1 m3 of this material? 3.7e22 Xcarrie (e) What is the resistance in ohms of a 0.19 m length of this slab? m/s ohms

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
Please help with Part E and Part D Measuring the properties of a slab of material...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Physics 2212 Lab 9 Whiteboard Problems Problem #1 A slab of an electrically conducting material is...

    Physics 2212 Lab 9 Whiteboard Problems Problem #1 A slab of an electrically conducting material is connected to a power supply as shown in the figure. A uniform magnctic ficld of unknown magnitude is pointing in the negative z direction, perpendicular to the slab. A power supply is connected to the ends of the slab and a voltmeter is connected to the sides of slab with steady voltages as shown. (Remember that a voltmeter reads a positive number if its...

  • Help with Part C. Please show all your work. I have already tried d=V/E= 7/[(2.9x10^-9)/2(8.85x10^-12) A...

    Help with Part C. Please show all your work. I have already tried d=V/E= 7/[(2.9x10^-9)/2(8.85x10^-12) A very large sheet of insulating material has had an excess of electrons placed on it to yield a surface charge density of -4.00 nC/m2. (a) As the distance from the sheet increases, does the potential increase or decrease? (e) increase O decrease Can you explain why without any calculations? The electric field points in the direction of increasing potential while pointing away from negative...

  • Help please with this question! Part A The circuit shown in (Figure 1) is used to...

    Help please with this question! Part A The circuit shown in (Figure 1) is used to make a magnetic balance to weigh objects. The mass in to be measured is hung from the center of the bar, which is in a uniform magnetic field of 1.90 T directed into the plane of the figure. The battery voltage can be adjusted to vary the current in the circuit. The horizontal bar is 64.0 cm long and is made of extremely lightweight...

  • Experiment 7 - The Resistor Capacitor Circuit Learning Objectives: Understand the short and long time behavior...

    Experiment 7 - The Resistor Capacitor Circuit Learning Objectives: Understand the short and long time behavior of circuits containing capacitors. Understand the and the mathematical relationshin between the current through the circuit as a function time, resistance, capacitance, and potential difference 1. Understanding the models for the behavior of a capacitor in a circuit A capacitor is a device that stores energy in a circuit as potential energy in an electric field. In the simple circuit drawn on the night,...

  • please show work when possible so that I may better understand. Thank you. x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field ass...

    please show work when possible so that I may better understand. Thank you. x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...

  • Can someone please help me with D and E. Constants Part A To understand the magnetic...

    Can someone please help me with D and E. Constants Part A To understand the magnetic force on a straight current-carrying wire in a uniform magnetic field. Magnetic fields exert forces on moving charged particles, whether those charges are moving independently or are confined to a current- carrying wire. The magnetic force Fon an individual moving charged particle depends on its velocity and charge er. In the case of a current-carrying wire, many charged particles are simultaneously in motion, so...

  • please, answer all questions Question 4 a) Two 8k resistors are connected as a potential divider...

    please, answer all questions Question 4 a) Two 8k resistors are connected as a potential divider with a supply p.d. of 20 mv. What is the current flowing and the p.d. across each resistor? (5 mark) b) The circuit shows four arrangements A, to D of three 2uF capacitors which arrangement has the smallest capacitance, the largest capacitance. (5 mark) Total 10 marks Space to answer Question 4 here А HAHE D HA Question 5 a) A transformer has 500...

  • Y-0 cm y 60 cm 30 cm B 10 T 10 Ω 10 cm. . v 10 m/s z out of page y A rectangular wire loop is car...

    y-0 cm y 60 cm 30 cm B 10 T 10 Ω 10 cm. . v 10 m/s z out of page y A rectangular wire loop is carried in the y-direction at a constant speed of 10 m/s. The loop has a total loop resistance of 10 Ω and is lying in the x-y plane. It is 30 cm long and 10 cm wide. A region of constant and uniform magnetic field of magnitude 10 T pointing in the...

  • Need by 12 pm July 30, 2020 with answers shown and explanation. Thank you. R 1)...

    Need by 12 pm July 30, 2020 with answers shown and explanation. Thank you. R 1) Two resistors are connected to each other in parallel, one resistor has a known value of R, the resistance of the second one is unknown. If the equivalent of two resistors in parallel is equal to what is the resistance of the second one? A) R B) 2R E) 4R 2) Which one of the following sentences is correct about the velocity selector? A)...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT