
#1
Feb105, 08:38 PM

P: 24

Here is the question, for reference:
E(I*r)(I*R_V)=0 V_ab=E(I*R) Any help would be appreciated, thanks. 



#2
Feb105, 09:12 PM

P: 24

Nevermind, I got it, but the next problem is giving me a bit of trouble:
If E = 7.5 volts and r = .45 ohms, find the minimum value of the voltmeter resistance R_V for which the voltmeter reading is within 1.0% of the emf of the battery. I am given the following equation to work with: E(1(r/(r+R_V)) 



#3
Feb105, 09:18 PM

P: 24

Nevermind, got that too. Disregard this thread, heh.



Register to reply 
Related Discussions  
Ideal Voltmeters of DC Circuits  Introductory Physics Homework  2  
Need advice on using voltmeters  Introductory Physics Homework  1  
TripleScale Voltmeters.......  Introductory Physics Homework  1 