1. The problem statement, all variables and given/known data A voltmeter of resistance 50kΩ is used to measure the electric potential difference in a circuit, as shown. The cell has an electromotive force (emf) of 5.0 V and negligible internal resistance. 2. Relevant equations I=V/R V=IR 3. The attempt at a solution I=5/150000 I=3.33E-5 V=50000*3.33E-5=1.7 V But the answer is 1 V. How?