All Problems

Electric Current

Problem 3.173

An ammeter and a voltmeter are connected in series to a battery with an emf E=6.0 V\mathscr{E}=6.0 \mathrm{~V}. When a certain resistance is connected in parallel with the voltmeter, the readings of the latter decrease η=2.0\eta=2.0 times, whereas the readings of the ammeter increase the same number of times. Find the voltmeter readings after the connection of the resistance.

Reveal Answer
V=E/(η+1)=2.0 VV=\mathscr{E} /(\eta+1)=2.0 \mathrm{~V}