quiz9 - = 2.5 ms. 2. What is the maximum value of the...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Quiz 9 PHY 2054/3808 October 27, 2009 1. A circuit consists of a 10-mH coil, a 9.0-V battery, a parallel combination of a 12- resistor and a 6.0- resistor, and a switch, all in series. What is the time constant of this circuit? The time constant τ = L/R. Here R = R 1 R 2 /(R 1 +R 2 ) = 12x6/18 = 4 Ω. Therefore τ = 10 mH/4 Ω
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: = 2.5 ms. 2. What is the maximum value of the electric field E at 1.0 m from a 100-W light bulb radiating in all directions? ( = 4 10-7 T m/A, c = 3.00 10 8 m/s). I = P/A = E max 2 /2 o c Emax = [2 o cP/(4 R 2 )] = 77 V/m (or N/C)....
View Full Document

This note was uploaded on 12/15/2011 for the course PHY 2054 taught by Professor Avery during the Spring '08 term at University of Florida.

Ask a homework question - tutors are online