1. The problem statement, all variables and given/known data 1) What is needed for an ammeter to measure current accurately? 2) What is needed for a voltmeter to measure the potential differences in the circuit accurately? 3) How can you construct an ammeter from a resistor and a galvanometer? 4) How can you construct a voltmeter from a resistor and a galvanometer? 2. Relevant equations 3. The attempt at a solution For 1 & 2, I just want to make sure I’m not missing any major reasons. An ammeter should have a resistance as close to 0 as possible and should be connected in series. A voltmeter has a theoretical resistance of infinity and should be connected in parallel. 3 & 4 have me confused... I thought a galvanometer was equivalent to an ammeter! Can you just pick a galvanometer with the appropriate resistance and hook it up properly?