In Fig. 27-62, a voltmeter of resistance RV ! 300 0 and an
Chapter , Problem 56(choose chapter or problem)
In Fig. 27-62, a voltmeter of resistance RV ! 300 0 and an ammeter of resistance RA ! 3.00 0 are being used to measure a resistance R in a circuit that also contains a resistance R0 ! 100 0 and an ideal battery of emf # ! 12.0 V. Resistance R is given by R ! V/i, where V is the voltmeter reading and i is the current in resistance R. However, the ammeter reading is not i but rather i-, which is i plus the current through the voltmeter. Thus, the ratio of the two meter readings is not R but only an apparent resistance R- ! V/i-. If R ! 85.0 0, what are (a) the ammeter reading, (b) the voltmeter reading, and (c) R-? (d) If RV is increased, does the difference between R- and R increase,decrease, or remain the same?RR0VAFigure 27-62 56
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer