oldmidterm3_pdf - mcconnell(kam2342 – oldmidterm 03 –...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: mcconnell (kam2342) – oldmidterm 03 – Turner – (60230) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A copper strip (8 . 47 × 10 22 electrons per cu- bic centimeter) 1 cm wide and 0 . 04 cm thick is used to measure the magnitudes of unknown magnetic fields that are perpendicular to the strip. The charge on the electron is 1 . 6 × 10 − 19 C. Find the magnitude of B when the current is 21 A and the Hall voltage is 1 μ V. Answer in units of T. 002 10.0 points A small rectangular coil composed of 48 turns of wire has an area of 36 cm 2 and carries a current of 1 A. When the plane of the coil makes an angle of 46 ◦ with a uniform magnetic field, the torque on the coil is 0 . 08 N m. What is the magnitude of the magnetic field? Answer in units of T. 003 10.0 points Given: Assume the bar and rails have neg- ligible resistance and friction. In the arrangement shown in the figure, the resistor is 8 Ω and a 6 T magnetic field is directed into the paper. The separation between the rails is 5 m . Neglect the mass of the bar. An applied force moves the bar to the left at a constant speed of 7 m / s . m ≪ 1g 7 m / s 8Ω 6 T 6 T I 5m At what rate is energy dissipated in the resistor? Answer in units of W. 004 10.0 points A coil is wrapped with 307 turns of wire on the perimeter of a circular frame (of radius 28 cm). Each turn has the same area, equal to that of the frame. A uniform magnetic field is directed perpendicular to the plane of...
View Full Document

This note was uploaded on 11/22/2010 for the course PHYS 303 taught by Professor Turner during the Spring '10 term at University of Texas.

Page1 / 4

oldmidterm3_pdf - mcconnell(kam2342 – oldmidterm 03 –...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online