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Unformatted text preview: 1. 2/2 points All Submissions Notes Web Assign Ch19 HW3 S2010 (Homework) Kiyaniah Tilghman PY 208, section 003M, Spring 2010 Instructor: Keith Weninger Current Score : 12 / 12 Due : Monday, March 1, 2010 12:30 PM EST About this Assignment Extension Requests Question Points 1 2 3 4 5 2 5 2 2 1 Total 12/12 (100.0%) Description Energy in circuits; Loop rule Instructions Reading: Sec 19.8 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Question: MI3 19.X.056 Why does the brightness of a bulb not change noticeably when you use longer copper wires to connect it to the battery? very little energy is dissipated in the thick connecting wires the electric field in connecting wires is very small, so emf E bulb L bulb electric field in the connecting wires is zero, so emf = E bulb L bulb current in the connecting wires is smaller than current in the bulb all the current is used up in the bulb, so the connecting wires don't matter 2. 5/5 points All Submissions...
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This note was uploaded on 09/21/2010 for the course PY 005 taught by Professor Mattewk. during the Spring '10 term at N.C. State.
- Spring '10